How-To Geek

The Complete Guide to Improving Android Battery Life


Once upon a time, you had to really keep an eye on your Android phone to make sure the battery wasn’t being depleted prematurely. Manually toggling connections, constantly adjusting brightness, and the like are basically all things of the past now—but there are still things you can do to maximize your handset’s battery life.

Before we get into the how, however, let’s talk about how far Android has come. Back in Android 6.0 Marshmallow, Google released a new feature called Doze Mode, which promised to improve battery life by “forcing” the phone into a deeper sleep when it’s not in use—leave it lying on the table or desk for a bit, and Doze would kick in, saving you precious juice.

Then, with Android Nougat, they improved this even further by making it a bit more aggressive: instead of kicking in while the phone is completely still, Doze now works while the phone is in your pocket, bag, or anywhere else it isn’t in active use. This means fewer apps will take up precious resources on your phone when you aren’t using it, translating to longer battery life.

And so far, it works exceptionally well. There’s just one problem: not everyone has Nougat, or even Marshmallow. If your handset happens to be forever stuck on Lollipop or KitKat (or older), there are still some things that can you do to make sure you’re getting the most life out of the battery.

First: Know Where to Check Your Usage

Look, this may seem like common sense, but I’m going to say it anyway: if you think your battery is draining faster than normal, look at your phone’s battery stats! This is very, very simple: just pull down the notification shade, tap the cog icon (to go to the Settings menu), then scroll down to the Battery section.

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One some devices—like most things from the Samsung Galaxy series, for example—this will just show you a basic screen with some estimates. While those are marginally useful, you’ll want to hit the “Battery Usage” button to see the real meat and potatoes here.

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On this screen, you can see what’s chewing through your battery, complete with a nice graph and a breakdown by app or service. If there’s an app causing issues, this is where you’ll see it.


But wait, there’s more! What many users may not realize is that if you tap on the aforementioned graph, you’ll get a detailed look at when the device is awake—or “wakelocks” as they’re generally called.


There’s a really simple way to read this screen: the bars show when each particular sub-head is “on.” Since I never disable my phone’s Wi-Fi, the screenshot above shows that Wi-Fi is always on and connected. Same with Cellular network signal. But as you can see, GPS, while always on, isn’t being used.

The “Awake” indicator shows when the phone was allowed to come out of a sleep state—this is what you want to pay close attention to. If this bar is basically solid and “on” all the time, that means something is keeping your device awake all the time, which is bad. You want to see very short bursts on the “Awake” bar while the display is off. (If the screen is on—which you can easily see from its status bar below—then the phone will naturally be awake as well. It’s not going to sleep while it’s being used, after all.)

If you’re seeing something different here, then there’s a problem. And, unfortunately, there’s no easy way to diagnose wakelocks without rooting your phone, which makes it difficult for casual users to diagnose battery issues. (If you do have a rooted phone, you can use an app called Wakelock Detector to pinpoint the problem.)

Disable Wireless Connections

Look, I’m not going to pretend that this is going to make a monumental difference in your mobile battery life, but I’m going to say it anyway: disable Wi-Fi, Bluetooth, and GPS if you don’t need them.

See, this used to be a very important step in optimizing your Android device’s battery life, but as time has gone on and Google has improved Android, it’s almost unnecessary at this point. Still, if you never use something like Bluetooth, turning it off isn’t going to hurt anything. It’s also worth mentioning that if you do disable Wi-Fi when you’re away from home, don’t forget to turn it back on—you don’t want to chew through your data plan, after all. To toggle Bluetooth and Wi-Fi, pull down the notification shade and tap the appropriate toggle, or jump into Settings and then into each service’s respective entry.

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With GPS, things aren’t as cut and dry and “on” and “off.” Back in the day, this was a monstrous battery hog, so Google optimized the absolute snot out of it—nowadays, it’s pretty much only used when it absolutely has to be, and only for as long as it needs to be. For example, your weather apps may briefly check for current location when you open the app so it can provide the most accurate forecast. If you’re using Navigation, on the other hand, GPS will stay on the entire time, because, you know…directions.

All that said, you can still actually control how GPS works. For example, you can allow the phone to use “High Accuracy” mode, which will find your location using a combination of GPS, Bluetooth, and Wi-Fi/cellular networks. This uses the most battery, but it’s also the most accurate.

So, if you head into Settings > Location, you can control this. Just tap on the “Mode” entry to see the available options. Remember, the less battery it uses, the less accurate it is! If you don’t use GPS or location services very often, go ahead and try one of the less-accurate and more battery-efficient modes. If you notice anything funky after that, then you may have been using an app that relies on a more accurate location service, so you’ll either have to deal with some jankiness or revert back to a higher accuracy mode.

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Check Notification Settings

You’ve probably heard that notifications can drain your battery, but as with all things, it’s a bit more complicated than that. These days, the majority of apps use Push Notifications. Instead of constantly monitoring for new notifications (which is very taxing on the battery), push notifications use an always-listening port that’s built into Android to receive information. In other words, instead of the app connecting to the internet every several minutes to see if there’s any new information, Android is always ready to accept new information from services that are enabled on the device. This is far more battery efficient because it’s a passive service.

There are, however, still apps out there that rely on non-push notifications. The biggest offender is generally going to be email services that still rely on POP3—while these are likely few and far between at this point, they’re still out there. A few social networking apps may do something similar.

The easiest way to tell if this is the case with an app is to check its notification options: if you have to specify a “refresh” or “update” interval, the app or service isn’t using push notifications, and you’re probably best off turning off notifications for that app entirely. Your battery will thank you.


Use Greenify to Automatically Put Apps into Sleep Mode

While this is admittedly more relevant on pre-Marshmallow devices, it’s still a useful tool to have in your arsenal against terrible battery life. Greenify is an app that essentially pushes apps into a “sleep” state of sorts by using Android’s built-in way of preventing apps from running constantly in the background. It is not a task killer, even though it may sound a bit like one—it’s much more effective.

To set up Greenify, first install the app from Google Play—if you’d like to support the developer’s work, then you can also opt for the $2.99 “Donation Package.” It’s worth mentioning that Greenify is more useful on rooted handsets, but it can also be used on non-rooted phones—the difference is that everything is automated on a rooted device, where you’ll have to “manually” greenify apps on non-rooted devices.

Once it’s installed, go ahead and fire up the app. If your handset is rooted, you’ll grant it superuser access here; if not, well, you won’t.


You can add apps to be greenified (aka put to sleep) by tapping the plus sign in the top-right corner. Greenify will show you apps that are currently running, along with apps that may slow your device down under certain circumstances. Go ahead and tap all the items you’d like to greenfiy, but keep in mind that the apps will no longer sync in the background after being greenified! For example, if you greenify your messaging apps, you’ll stop receiving text messages. Or, if you greenify your alarm clock, it won’t go off. Be thoughtful in what you choose to add to this list!

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Once you’ve selected the apps you’d like to put to sleep, tap the check mark action button in the bottom right. This will take you back to the primary Greenify screen, which will show which apps are already hibernated and which ones will be shortly after the screen goes off. If you’d like to push apps into hibernation immediately, tap the “ZZZ” button.


If you’re working on a non-rooted handset, you’ll need to grant Greenify an additional permission. Once you click the “ZZZ” button, a popup will show up at the bottom letting you know that you need to grant the app Accessibility Settings. Click the button to jump directly into the Accessibility menu, then select “Greenify – Automated Hibernation.” There’s an explanation of why it needs to service enabled here—read over it, then click the toggle in the top bar. A warning will pop up, go ahead and tap “OK” to confirm. After that, you can back out to get back to the Greenify app.

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On rooted handsets, everything will happen automatically moving forward—you’ll probably want to keep an eye on which apps are getting greenified as you install things, but otherwise it’s largely automated. On non-rooted handsets, however, you’ll probably want to throw a Greenfiy widget on your home screen. You can do this by long-pressing on the home screen, selecting “Widgets,” then scrolling down till you find “Greenify.”

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There are two options here: “Hibernate + Lock Screen,” which will greenify your apps then turn off the display, or “Hibernate Now,” which will greenify apps and leave the display on. Take your pick—if you opt to use the “Hibernate + Lock Screen” option, you’ll have to give Greenify Device Administration access. The first time you tap the widget, it will let you know it needs this privilege—just tap “Activate” and you’re good to go. From now on, when you tap that widget, your apps will be pushed into hibernation and the display will turn off.


Keep the Device Out of Extreme Temperatures

This one can be a bit trickier because it’s not just a tweak or toggle—it has to do with where the device physically is. Extreme temperatures—both hot and cold!—can cause the battery to drain much faster.

For example, let’s say you live in a hot climate (like Texas, for example). It’s July and you jump in your car, toss your phone in a dock, and fire up Navigation. That means your GPS is in use, the display is on, and it has the hot sun beating down on it. That’s a recipe for disaster—the device will run hot because it’s working hard, and when you throw that hot sun into the mix it can be catastrophic to your phone’s battery life. In fact, I’ve seen devices lose charge while plugged in under this exact situation. It’s that bad.

What many people may not realize, however, is that extreme cold is just as bad as heat. The safe operating temperatures for lithium ion batteries is –4°F to 140°F—circumstances that are highly unlikely for most people to be in—while the safe charging temperatures are much lower: 32°F to 113°F.  Naturally, as you get close to either end of this extreme, battery life will be negatively affected.

Do Not Use Task Killers or Fall for Other Battery Myths

Lastly, it’s important to know what not to do. Lesson number one: don’t use a task killer. I don’t care what anyone says, just don’t. This is a very, very old-school way of thinking that goes back to the day when Blackberries were the hottest things on the planet and mobile operating systems were simply inefficient.

While it may seem like a good idea to stop apps from running, it’s not! A lot of times, they’ll just start right back up, which will actually kill more battery than it saves. Task Killers completely disrupt the way Android is supposed to work, so not only does this not positively impact your battery life, it negatively impacts the system as a whole. Use Greenify instead—it handles background apps much more gracefully.

And while we’re talking about old technology, let’s talk about modern batteries. You’ve probably heard people say “you have to deplete your battery every once in a while to keep it healthy!” While that’s very true for nickel-cadium batteries, it simply doesn’t apply to modern lithium ion batteries—in fact, it’s actually bad to completely deplete those more than once a month or so. To keep your Li-ion battery healthy, it’s best to perform shallow discharges and then bump it back up often. The best rule here is to keep your battery above 20% most of the time, and throw it on the charger somewhere between 40% and 70% whenever you can. We actually have debunked lots of these common battery misconceptions before. Understanding how your battery works can go a long way in knowing how to take better care of it.

Honestly, modern Android devices don’t require a lot of intervention from users when it comes to maximizing battery life. If you’re having an issue with poor life, then there’s probably a clear reason. Starting with monitoring what’s happening in the background, you should be able to pinpoint what’s going on. Otherwise, you can use some of these tricks to eke out as much juice as possible from your handset. Godspeed.

Cameron Summerson is a self-made geek, Android enthusiast, horror movie fanatic, metalhead, and cyclist. When he's not pounding keys on the 'net, you can find him spending time with his wife and kids, chugging away on the 6-string, spinning on the streets, or watching The Texas Chainsaw Massacre.

  • Published 11/3/16

Comments (162)

  1. Ben

    This is wonderful, but I’m curious about actual resultant battery life numbers given these tips to those as opposed to what you were getting before. How much of a savings did you receive?

  2. Alan

    You can also toggle airplane mode by holding down the power button for 1 second and selecting Airplane Mode instead of Power Off.

  3. gumbald

    Putting it into Airplane Mode is a little excessive to stop it scanning for Wi-Fi networks? It also stops it being useful as a phone. I could greatly extend my battery this way, by turning the whole thing off.

  4. Mike

    This is related to the widget advice. I went from 5 screens to 3 and uninstalled sports tap and my battery life increased substantially.

  5. Dan Midwood

    Nice article. The section about disabling WI-FI shouldn’t be pointing at turning on Airplane mode though.

  6. Ermin

    Great info! I would recommend an app called JuiceDefender. I worked great for my Nexus One and almost doubled my battery life.

  7. yah5

    You should really add in the task killer section not to leave it on and kill applications in intervals. Not having a task killer on saves about 20% battery life in my own tests. You should recommend that if you feel your phone being a bit slow, open it up, and kill all the things you don’t want running along with the task killer so it shuts it off too.

    It’s been well documented by users that not using the task killer saves rather than takes away battery life.

  8. Jim Nutt

    Auto task killing is not helpful, all it does is force Android to reload the task again, using even more battery than if it had been left alone. The only time to use a task killer is for rogue apps that chew up CPU time and if you have one of those, you should just uninstall it. I get 16 hours of battery life from my Droid and don’t use any task killers (and that’s with WiFi on all the time). A program that is actually useful is “Screebl”, combined with setting your screen timeout to the minimum it will keep the screen on when the phone is in use and will shut it off rapidly when it isn’t.

  9. vitor

    very useful guide! thank you!!

  10. Mikael R.

    So basically switch off all of my smart phone’s “smart” capabilities and maybe it will last for a while as a phone… I really like the potential of the Android platform but they have to get this battery management fixed because everyone else has found a way to maintain extended capabilities while still lasting most of a day or more. My Droid Eris barely lasts 4-6 hours even when I’m not activating the screen. Yes, that’s 4-6 hours in STANDBY!!! Unacceptable!

    “Don’t make me go back to Blackberry!!”

  11. Ross

    By far the best way to find the apps that are using a lot of battery power is to download the Spare Parts or the BatteryHistory app. (both get you to the same info)

    Also, if you get the Tasker app you can automate turning on and off bluetooth, wifi, etc. in certain locations or phone states.

  12. Shanton

    Download the “Extended Controls” app from the market. It will set you back $1, but it allows you to create your own Power Control Widget. It allows you to add MANY different power saving toggle items, including many of the items listed above in this article. It is my new favorite app!

  13. jell

    *#*#4636#*#* and switch network type to yours

  14. Shawn Morrison

    One of the best apps I own is SetCPU. It gives you the ability to modify the speed at which your processor is running. I have my Samsung Captivate running at 400Mhz and also have a setting to throttle it down to 100Mhz when I’m not using it. That in itself has impacted battery life the most.

    Great article, and thanks for the additional tips !

  15. Ross

    on the battery usage screen, my android shows ‘cell standy’ and ‘phone idle’ as the top two battery consumers (>40% each). I’m not understanding if that’s using up all my juice or if that’s a good thing. If it’s bad – what can I do to drop those?? Thanks

  16. Ca$e

    You can check the internal stats of the phone (what’s used the most battery, gps, etc…) by
    opening the dialer and pressing:


    VERY helpful in my experience.

  17. kelvin

    I agree with most everything except the part about task killers. They’ve actually been shown to do more harm than good. Sytem Panel is a much better alternative.

  18. Gig

    Very very awesome guide… I would however, ask that one does not recommend that users get a task killer… especially with 2.2, it tends to do more harm than good, and leads people to conclusions that aren’t true, and non-techy people to do things that shouldn’t be done.

    For instance, a friend of mine just got an EVO 4G in NYC. It came with the 4G modem on, despite the fact that there is no 4G in NYC yet. This can take an EVO from full to dead in about 5-6 hours with ZERO use, and if you use it, you’re talking 4-5 hour range.

    Because of so many guides on the internet recommending task killers… she downloaded one… and would kill everything, thinking that she was doing what she was supposed to do.

    One of the things she was killing was the HTC 4G widget that they place on your desktop. It is simply a switch, but instead of clicking it to disable 4G, she was killing the app, thinking that she was turning off 4G… a month later, she returned the EVO.

    Task killers ONLY really benefit the user in killing MISBEHAVING apps, and it’s probably just better to direct people to the battery screen and let them see what’s draining their battery and uninstall, kill that app specifically.

    Task killers incorrectly cause users to think that all of the apps they see listed are ACTIVE and using their battery, when that isn’t the case, and causes bad behavior on the part of the user. In general, try to not recommend it.

  19. Phillip

    Dude, airplane mode to disable wifi? Come on now. (Airplane mode disables phonecalls and data as well, not just wifi).

  20. sebastian

    two additional tips:

    * use “Startup Auditor” to disable auto starts from installed Apps (for non-rooted devices)

    * use Juicedefender to turn off the internet connection in the night when you sleep or if the screen is off.

  21. prupert

    Good article. I thought I’d make a couple of comments. For GPS, if you have no apps running in the background that use GPS, there is no need to turn it off….

    As far as task managers go, there really is never any need to kill background apps, Android is designed to fill up your memory with frequently used apps, so they load quicker. Apps in memory use little to no battery power. You can read more here:

    You are however correct about CPU usage, so if you identify any apps hogging the CPU, then kill that sucker!

    For me, the main culprit of battery use is my 3G connection, so checking the use only 2G networks option under Settings > Wireless & Network Settings > Mobile Networks pretty much doubles my battery life to around three days (and that’s with autosync on all the time, but tasker turning off mobile data via APNdroid at nights).

  22. Dan J

    How about the 30% of us who are STILL on 1.5??? These menus don’t exist… GRRRRR…

  23. Dave Kaufman - Techlife

    Awesome article, I recently switched to a Nexus 1 and the beautiful screen is certainly a battery drain. Some of your ideas were wonderful. I would suggest to you and your readers you look carefully at Timeriffic in the Market.

    It is not Tasker or Locale but focuses on improving battery life and controlling your phone using time settings. It’s got a 4.5+ Star rating and many happy customers. (and yes full disclosure I am part of the development team.) Oh yeah…and it’s FREE.

  24. ad

    You had me until you suggested installing a task killer.

  25. Jeff

    Awesome guide, very basic, and comes with pictures. I work for T-Mobile and get asked this all the time. I now have a link for them, thanks.

  26. jimf

    buy a 2d battery and keep it handy…

  27. ric

    Yeah, these’ll help. What’ll help more are:

    1) going into settings…wireless and networks….mobile networks and unticking “enable always-on mobile data”
    2) going into settings…wireless and networks…menu…advanced…wifi sleep policy and setting it to 15 mins.

    Neither will have any appreciable effect on the way your device behaves other than improving battery life.
    If you root your phone you can use SetCPU to set CPU frequency to minimum level when screen off, too, which makes a difference.

  28. Will

    Get JuiceDefender!

    I’ve used tasker and while it works its not nearly as simple (nor effective) as juicedefender

    This means I’m @ 45% battery at the end of the day, rather than 0%

  29. Paul

    Won’t airplane mode turn off all transmission including calls, not just wifi?

  30. HTC Desire

    I noticed WiFi is a big battery drain when on, but not connected. I use WiFi Status app which puts a notification in the status bar when WiFi is on but not connected and allows you to turn off WiFi from the notification.

  31. Chris

    This was helpful. But I still want to know why my “Cell Standby” meter in my battery history is always higher than anything else. I haven’t actually talked on the phone in a day or so yet thats at 34% and my “Android System” is at 31%. Can someone explain what’s wrong?

  32. stad

    Task Killers kill more battery than they save.

  33. Gary

    I have used most of the tips listed, but my battery life improved substantially after I uninstalled the task killer app. Perhaps I wasn’t using it correctly, but I get at least a day and a half on my Droid using the built in memory management of the custom ROM Bugless Beast v0.4 with the stock kernel.

  34. Izkata

    Note on task killer:

    A large amount of them list the cached apps in with the backgrounded ones. The cached apps use no cpu or battery, and their memory can be reclaimed instantly for use in another app.

    “Killing” a cached app just causes Android to reload it into memory, draining battery faster.

    SystemPanelLite by NextApp, Inc is one of the few I’ve seen that actually separates them. And it comes with very nice views of CPU/Memory usage.

  35. Matt

    You should indicate which versions of Android each of these functions will work with. For instance, my brand new Behold II runs Android 1.5… ancient. It doesn’t have “Settings –> About Phone –> Battery” which looked (and would be) very useful!

  36. Joel

    Juice Defender worked wonders for me. I get through the day now without a charge easily -EVO

  37. TimK

    I’m using an app called JuiceDefender, and it really extends my battery life significantly without me having to do anything other than set it up. However, there is a price to be paid.

    The general idea behind JuiceDefender is that it keeps data connections (GPRS/EDGE/3G, and WiFi if you buy the optional UltimateJuice) turned off when the screen is off, and then activates them at an interval you set so that apps like Gmail can sync. The price you pay is that this means you no longer get your E-mail and similar notifications right away.

    Also, if you don’t like this behavior, you can choose not to do it. If you disable the Screen control, JD will not turn off data connections when the screen is off; alternatively, if you disable Schedule, JD will not regularly enable data connections for you.

    The feature I really bought UltimateJuice for, though, is the Location feature, which disables WiFi when you are not in range of a known network (it learns which networks you normally connect to). I previously found that having WiFi enabled all day at work was what was sucking up my battery so quickly, and this really helps.

  38. Nicholas Turner

    I have a nexus one, anything that syncs like facebook, twitter, are set to 2 hour intervals, gmail is on push. Wifi is on all the time (never sleep), bluetooth is off, and I’m using 3G/WiFi most of the day.

    I’ll get 18-20 hours before its at 20% if I text all day and listen to some music every now and then.

    Don’t use a task killer it will give you LESS battery life, androids method of managing tasks is very good already, no need to screw it up. But like everyone says use one to kill an app that’s stuck.

    Also just set your screen to auto brightness, my screen uses very little of my battery according to the stats page.

  39. Xenio

    Just turning Wi-Fi Off when I leave home give me 30% more battery at the end of the day.
    I am using Y5-Battery Saver to automatically start Wi-Fi when I am at home.
    No task killer, manual brightness about 25/30% and extended controls to fast switch what I need.
    With this I am finally enjoying my Nexus One…

  40. WC

    What about turn off the device? This save the whole battery.

  41. Mike

    I can’t believe this didn’t talk about cell phone signal. Next to run away apps constantly syncing or using CPU cycles your phone having poor signal strength will suck your battery.

    If you are someplace with poor signal strength try using WiFi with the sleep policy set to never. If you can’t get good 3g strength but good voice signal you can turn off Mobile Data (mentioned in the comments). This helped me the most because my apartment has terrible 3G Sprint signal and if my phone isn’t on WiFi it’ll drain in like 5 hours.

  42. jerrod

    when i check my battery it says “camera” for 96%? that doesnt seem right–i dont use my camera that much.

  43. Katie

    I’ve followed many a guide on how to increase the battery life of my HTC Hero. Nothing bothers me more than a battery draining when I haven’t used my phone at all.

    I literally turn off the Mobile Network option. My battery charges much faster when this is turned off and I have noticed a significant increase of battery life. I toggle between On/Off mode often enough that this is always in my recently used apps/settings.

    It is cumbersome to have to turn the network back on anytime I want to use the Internet, check e-mail or send pictures, but the return on battery life makes it worth doing.

  44. John

    Great Guide, I really liked it. I use Advanced Task Manager Free on my Android and with that application you can add a widget that takes up the amount of space as putting the shortcut up on a screen. All I have to do is click the widget and it will kill all open apps that I don’t have already exluded, I do that every time I shut off my screen and it really helps my battery life.

  45. Alan Wild

    I find the About Battery completely useless on my 2.1 Samsung Moment. It only ever has three rows in the list. Right now it’s showing:

    Android System 91%
    Cell Standby 7%
    Phone Idle 2%

    To be honest, that’s pretty typical for me when I check it. I already kepe the brightness at 10%, disbale WiFi and I keep GPS disabled most of the time. I’m lucky if I can get 10 hours out of my battery.

  46. Brian

    I’ve glanced the comments, but if this has been mentioned, I apologize:

    It turns on WiFi only when known networks are around and helps from having to manually turn wifi on and off. I’ve had it on my phone since nearly day one.

  47. Jm

    In other words folks, cripple your phones so that
    you are able to use it. There has to be better
    Battery management coding built into Android.
    Come on google.

  48. Nicholas Turner


    There is, it works really well. But like on any phone if you leave everything on and all your apps sync at 10 minute intervals, your battery is going to suck.

  49. Joshua Drake

    This is great but I find the simplest way to get long life is just turn off the data connection. It is simple (hold the top button on the incredible for a moment and the screen pops up). When I need data, I just turn it back up, open up whatever app and go. Then turn it off again.

    I get very long battery life and it is much easier than the super tuning above.

  50. TheDead Parrot

    I have the Samsung Captivate.
    My screen accounts for 60% of my battery drain. (with lots of use and lots of widgets/apps constantly updating on wifi)
    My backlight is turned all the way down.
    It’s still brighter than I need. Sigh.

  51. DJRyan920

    I removed the twitter app and my FB account from my Hero and normally by this time today my battery would be down to 1/2. I am still over 3/4 charged. Now granted a portion of that is because Im not picking it up to look at those sites now so the screen isnt on, its not transferring as much data, and not using as many CPU cycles. I will just use my iPad for that stuff.

  52. bob

    these are all common sense things that you should be doing anyway. for most of my suggestions you need root access, like increasing the time between WiFi scans, or dropping the backlight lower then the O/S usually allows. The only tip i could give the avg user is ditch the new Facebook App, v1.3 and 1.3.1. I know i know it is pretty and personally i love it but when 1.3 was released people discovered that it would not let your phone sleep properly and was draining major battery life. A day or two later they released 1.3.1but in my testing it did not fix the problem. It could still be present for me since i am rooted and running the latest leaked Froyo (FRG22) build so that may be my issue. It was somewhat hard to discover too because the battery menu doesnt show Facebook eating up anything extra until you dig a little deeper. To see it you will need SpareParts or BatteryLeft (no root needed for either) installed so you can get tot he hidden battery history display. In there you change “Other Usage” to “Partial wake usage” and you will see Facebook is eating up extra battery when the phone should be sleeping.

  53. leo

    whats sad about this world is people have improved technology but cant seem to improve the batteries it takes to power more powerful devices.

  54. Andrew

    Use a program like Omnidroid ( to automatically toggle some of these settings (brightness, wifi) when low on power or unplugged.

  55. sanjay

    You show a task killer in your screenshots, they don’t work in Android 2.2 (Froyo). You make a reference to the following:

    Disable Your Wi-Fi When You Don’t Need It

    Wi-Fi can really speed up accessing data on your phone,

    Um, most phones are usually running on a network using either 3 or 4G, using WiFi as well is overkill and does NOT speed up accessing your data. It’s like trying to put two keys in one lock, you only need the one key and you’re already paying for 3/4G coverage, so why again are you advocating that even WiFi should be on when in the network-covered area?

    The article is okay, needs a lot of rewriting to make it relevant to Froyo.

  56. Rahul

    Its true but my x10’s battery doesnt last for half a day nd if i dont touch it the battery drains out within 24 hours,, i am so confused wit ah fone i seriously dont know wat to do.

  57. Pookie

    Task killer applications are kind of pointless on Android. If Android thinks it needs more memory, it will hard stop whichever process it figures is best. Killing a process with a task killer only increases the workload on the phone the next time the process is launched.

    The moral of the story is that you should worry about what you want to do with the phone, and let the OS worry about processes and memory. As somebody mentioned above, you may actually be doing more harm than good.

  58. gh

    Auto task killing is a myth. It won’t help and will sometimes be worse.

    Install Airplane Mode Wi-Fi Tool by Daniel Velazco. It’s in the market. You can put it in airplane mode except with wifi still running. This can help sometimes.

  59. Matt

    My HTC Hero does not have the battery screen in the 1st tip :(

  60. keion

    Also turning off vibration is an important feature. That drains the battery every time you send a message.

  61. jeff

    If you didn’t know about any of the suggestions listed in this post, you dont deserve to own an android phone.

  62. Nathan

    Wouldn’t a curated application marketplace with vetted APIs that are focused upon protecting battery life be the way to go?

    I am not saying close the platform down and restrict the marketplace. I am saying, what if there was another marketplace that was curated by Google (or a nominated third party) and had app development restricted to practices that don’t kill battery life?

    I for one would happily pay a little extra money to buy apps from such a marketplace to have the reassurance that they wont harm my battery life.

    That being said, iPhone for teh win! :)

  63. andferno

    I use Autorun Killer on my Nexus One (no need to root it). Now I can disable all those apps that start on phone boot (there are a lot you even can imagine). That improves boot time (not so useful) and gives me control over loaded apps. It’s an important thing to have only used apps loaded, so you can save memory and a little battery. Loading and unloading apps consume CPU and active apps could also do it. That’s why I also use Advanced Task Manager to control CPU and memory consuming apps. So I can kill background running apps that consume too many CPU or are increasing memory usage without sense.

    My 3G connection is enabled only on demand (like Wifi), but I don’t use apps like Twitter, GoogleTalk or Facebook that are more interactive than Gmail. Don’t use bluetooth too much and screen bright is on auto.

    By the way, good guide to keep our phones running longer.

  64. Umesh

    Everything was OK with my N1 till recently when the battery started getting run down from full to zero in a mere 6.5 hrs!! The battery use chart showed that this happened whenever the ‘Android OS’ used up to 90% of the battery. I thought that the Android OS used to use only about 2% or so. Also, I installed the latest update of Google maps, so maybe that would help in the diagnosis. Please help on how to set this battery drain problem right. Also, the phone gets a bit warm during this runaway battery gorging events.

  65. Thomas

    Interesting article, although I think activating Airplane mode to get rid of WiFi is not a good tip.

    Anyway, on my Samsung Galaxy S’s battery stats screen I read 44% for Display. It also tells me 6 1/2 h since last plugged in and “time on” for Display is 30 min. Does that mean that 30 minutes of Display usage accounts for 44% of the whole battery usage? To tell you the truth I find the layout of the battery stats screen very confusing and not exactly intuitive. The bad German translation doesn’t make it easier. But switching the phone to English is not an option as then I don’t have the German keyboard layout any more. Android sucks with this connection between UI language and keyboard layout…

    I have the brightness of the screen set to the lowest possible setting as it’s still bright enough then even when I’m outside. WiFi is only activated in my house or office and Bluetooth isn’t used at all. There’s one Gmail account which is set to be checked with Push. I have to recharge the phone every evening and would like to minimize this to perhaps every other day or so. Is this possible?


  66. Brett

    Disabling Wifi does nothing. Information posted by Google from the I/O says that Wifi uses almost no battery unless data is flowing. They also suggested to use Wifi instead of 3G to save battery. Though it uses a little more battery than 3G to transfer data, it transfers data faster and shuts down. 3G takes longer to load pages causing it to use more battery. At the end of the day when my battery is almost dead, my battery information says that live wallpapers used about 5%. That’s nothing to disable it for. Most of the information on this page goes against everything Google said at their I/O.


    Notice how Wifi uses almost 0 battery unless data is flowing. Also notice how Wifi uses more battery while information is being transferred but the information transfers so much faster with Wifi. When the web page has loaded (or any other data request) wifi goes back to near 0 power consumption while 3G would still be loading.

    The information about task killing is absurd. Killing background applications will not speed up your phone or save battery. Applications that are running in the background are stored in your RAM. RAM uses the same power consumption if it’s full or empty.

    Google Developer:

    I think I’ll go with the information stated at the Google I/O…

  67. Matt

    I’m curious as to how you got the screen shots of your exact phone? I’ve been using emulators for screen shots, but the ability to take them directly from the phone would be useful.

  68. JoJo

    Problems like this — the almost universal annoyance of battery sucking and clunky hardware — is the chief reason why the iPhone is so dominant.

    I love the philosophy of the Android open source OS, and I can see that there’s a difference between OS and hardware issues, but most people won’t. Most people will expect that things work well once you get them out of the box. If they don’t, they will blame the whole package.

    With the Android phones, Google appears to have exerted zero quality control. With the iPhone, everything from the OS to the hardware to the packaging is overseen by Apple. Yes, they bit it hard when they designed in the antenna problem in the latest version. But their phones are still, over all, a far more satisfactory experience for the average Joe.

    It’s frustrating. I want the Android to dominate, because open source is that much cooler than the proprietary and controlling approach of Apple. But I am very frequently frustrated with my g1, and now I see from the comment thread here that my frustration isn’t likely to dissipate much if I decide to move up to a newer model Android phone. AAARRRGGGHHH!

  69. Felix Nagel

    “You can setup an auto-kill list for applications you don’t use that often—make them cut off when you shut off the screen, or after an interval. ”

    This is a bad idea. Why? Read:

    For Dummies:

    For Techis:

  70. danimo

    it earnestly surprises me how many android users don’t know about every single one of these tips already. they all seem like common sense to me but i’ve had to school each and every one of my fellow android-powered friends in most of the information above, especially about unnecessarily keeping gps enabled when it explicitly warns that it eats battery! so clearly, while this guide isn’t much direct help to me, it’s definitely useful to the masses. and some of the comments are interesting. :P

    thankx for the tip on advanced task cleaner. i use both advanced task killer and advanced task manager but neither one is exactly what i want so i’ll try out atc next. : )

  71. Patty Golsteijn

    Too bad there are no ‘tweet this’ buttons for posts! (or maybe I just can’t see them)

  72. Chirag

    Too bad this battery feature is not available in 1.5. :(
    Besides all the other points are very helpful and promising. :)

  73. JMF

    Agreed on the no-go for task killers! Ultimately, they turn out to be the cause of a whole ‘nother set of problems.

    Sorry, iPhone fan-boys — the iPhone was FAR worse for me in terms of battery life, *and* I couldn’t replace the battery.

    I realize it’s a pain to have to worry about battery life, and I do hope that Google/Android takes a cue from Palm (who improved their Pre’s battery life by leaps and bounds with a single update to the firmware), but in the meantime I:

    (a) follow the common-sense recommendations above (disable connection items when not needed, etc.)

    (b) carry a spare battery — or — a solar charger

    and (c) keep it plugged in whenever possible (home, office, car)

    I wouldn’t give up my Evo for all the iPhones/iPads or old-style flipphones in the world….

  74. SkAndroid


    I have downloaded one new app, I wanted to check how much battery the app consumes. How do I check that?

  75. 2FA5T

    I recently went on vacation out of the country, and did not bring my phone. While gone, I discovered a method much more effective than airplane mode to save battery life. The procedure as follows:

    1. Press and hold top button for 2 Sec.
    2. Select “Power Off”

    That is!!!

    Using this method, I was gone 2 weeks. I came back and still had 97% battery life!!!! This mode makes your phone equally as effective in phone, Bluetooth, and wifi modes as airplane mode, but with much better battery life!!!

    Give it a try and left me know if you experience the same results.

  76. Matches Malone

    Possible fix — Skip to the bottom if you’re short on time

    I usually leave my cell phone turned on and in my car while I’m at work. I had the problem of coming back to my phone after a full charge and seeing that it need to be plugged in! Or worse yet, it already shut off since the battery was too low. “Nonsense,” I thought. I didn’t use the phone at all for those 8 hours!

    Over a few weeks I independently tried all sorts of things to try to solve my battery life issue:
    – the usual: turn screen brightness down; no GPS unless using Maps, no Bluetooth unless driving
    – switched the phone to Airplane Mode -> FAIL — Phone idle percentage would be around 70%
    – un-installed ALL non-stock applications -> FAIL — Cell standby percentage would be the majority
    – turning off Auto Sync -> FAIL

    I narrowed the problem down to the Browser. If you’re like me, your Browser’s home page is the Google mobile search page — you know, the one that tries to use your phone’s location when you perform a search.

    Whenever I restarted my phone, I couldn’t repeat my battery problem. This is probably because the Browser wasn’t invoked and thus Google’s home page (with location service) wasn’t invoked. So now I get into the habit of Force Quitting the browser before leaving my phone in the car. I haven’t yet tried adjusting the search page’s setting to select ‘No’ for “Allow use of device location?” But I think this will yield the same result.

    Long story short:
    – Force quit your Browser (Phone Settings -> Applications -> Manage applications -> Running tab -> select Browser -> select Force stop)
    – Disable use of device location on Google’s mobile homepage (On the Google mobile search page click the Settings link -> select ‘No’ for “Allow use of device location?”)
    or maybe
    – Change your Browser homepage to something else

    Hope that helps!

  77. Androidfan

    This is awesome info for beginers like me

  78. Name

    Most of the android phones have built it task killers, it would be stupid to download another, just a word to the wise..

  79. James Frederick

    I use battery saver, it helps a lot, easy way to turn off stuff really quickly

  80. sd

    Recently got a Motorola Harm Android,Phoneis Good but the battery backup is worst……..

  81. shahid.

    I just want to know howto save androud phone battery from idel.

  82. Tom.IT

    Yeah this guide is good, but it is very basic and mostly it is not enough!
    My first advice is=> Use a fine tuned mod and not the basic shitty stuff:
    I’ve a Samsung Galaxy S i9000 and I’m using Darky’s v8.1 mod (based on Android 2.2.1) and the juice lasts for 48-60 hours with normal usage (wifi usually on because I need it to get my mails, also reading books on it and listening to music), but with lower usage I was able to make it unplugged for 4 days.
    Also it is possible that your battery cache is storing false info from your battery percentage, if you’ve a newer kernel, the you should clear it and deplete from 100% to zero, this way the cache will store the true range of your battery capacity.
    Also there are a lot more tips and tricks, you only need to search the web ;)
    Regards from Hungary!

  83. Brian

    Turn “Haptic Feedback” off, just turning this off I got another ~2 hours of battery life on my Captivate.

  84. Randall

    Thanks for this. I was down to 3 hours of standby life. With your help, I found a silly app that I rarely used but thought it needed to synch with GPS continuously. Killing that, along with some other apps that synched too often, and I’m up to 16 hours of fairly active use. That is good enough for me and better than I’ve had since getting a smartphone.

  85. @pryerlee

    just buy a spare battery

  86. Aidil

    Get an iPhone 4. I have one and have nothing to worry bout battery. Been using wifi,apps,games and battery still holding strong at the end of the day. Yeah, multitasking on iPhone is not like on android, but hey, at least I don’t have to carry around spare charges and task managing my smartphone that’s suppose to be smart enough to mange itself in the first place.

    I like android and all it’s capabilities, but I love iPhone even more. :)

  87. Nirav

    Hello Everyone great guide, but I have only have question about email check frequency setting for Gmail.
    I am new to Android so please bare with me. I just got Droid X running 2.2 Froyo and I went to Account settings and I can not find email check frequency anywhere not even in OS settings menu. So if this setting is removed from 2.2 then where do I go to change email frequency settings? can someone please help.

    Thank you.

  88. jhonn mykeal smitthe

    i pull my fone off the charger at 6:55 am then turn it off at 7:40. i turn it on again at 3:15pm and text a lot and stuff and it usually makes it through the day. i had CHOMPSMS and i deleted it and noticed a lot longer battery life. it is apps after all and i only have 2 apps now because of it

  89. Outtanames999

    All this advice is crap. Just put your POS phone back in the box and take it back. Android especially the shitty Samsung phones are losers. They need to fix this problem now.

  90. David Berman

    And, on top of all that, set your wallpaper to something all black or close to all black. No downside, less power, happier planet!

  91. Kunal @ TechHogger

    Android eats battery power like anything. All the tips are the only thing you can do to stop battery getting drained soon.

  92. Hiten

    Nice useful tips to save/extend battery life for Android based phones.

    I like this.

  93. battery problem

    actually before few days i buy a cell lg optimus n i charged last night till 11 pm (fully charged) but in morning i got shocked when seen the battery its only 54 percent how is it possible? when i seen the usage , my cell using 60 percent battery in standby . how is it possible?

    plz give me a solution for that

  94. mik

    This is going to seem like a really dumb question but a kid has just put a screen saver on my Samsung and I can’t get rid of it. I just want my original screen back. The picture of the city street that we must all start with. Please help!!

  95. WRAITH

    For android phones do not put all the widgets on the panels of your phone it can cause more work to the sync engine of your android phones. Just put those widgets that you need uninstall those apps that you don’t use. Power off your phone.

  96. RK

    Nice article. But it is all about turning a smart phone back to dumb.
    I got new myTouch 4G and it used to drain out every 7 to 8 hours (even in stand by mode – with all location, wi-fi, background data, sync turned off)

    Returned it in 8 days and back to my BB. I wonder how Android is gaining popularity with this big problem in their backyard.

  97. Albie

    For all of those who still haven’t tried JuiceDefender, try it at least for a few days. It doesn’t cost anything and can really make a difference!
    Simply put, what JuiceDefender does is it automatically manages the most battery-draining components of your handset (GPS, WiFi, etc.), powering them only when they are actually needed …rather than leaving them on all the time. So your phone is not crippled, it’s just much more power efficient!
    Anyway JuiceDefender does much more than that, it’s literally full packed with features for battery consumption optimization (connectivity scheduling, location-aware controls, battery threshold controls, etc.). It’s quite amazing what it can do.
    It is fully customizable and fully automatic, meaning that it only needs to be set up once, and then it runs by itself improving battery life from behind the scene.
    Think about it before spending 50$ on an extra battery, going nuts by micro-tweaking or even giving up on Android.
    You can find some video reviews on JuiceDefender’s Facebook Page and more info on its website.

  98. rino

    regarding the “Battery Usage Screen”, how do you read it? does it mean that the phone being idle consumes 15% more battery??

  99. Cinny

    Kudos to Outtanames999 he is right on the mark about Samdung Android phones, they are P’sOS! What a total waste of $$ :(

  100. Robot

    Fail to this article for suggesting to use a task killer. I see we must not have much experience with Linux do we? Also Cinny the nexus S is made by Samsung. Case rested.

  101. gian

    my battery drains veryfast when I’m browsing using packet data and while sharing wifi(hotspot)
    isthis normal?

  102. Iain

    Great article…have added all relevant to my Galaxy S…sitting back and waiting for the battery bar to slow down now!

  103. Arvind

    Simple thing that you could do is that use network and display properties only when necessary.
    This simple tip can saves your batteries 2x longer.

  104. Chirag

    What does one need to do if they find that Android System is the one utilising the battery the most? Anyone having any idea please help.

  105. Brian N

    I ditched the Weather Channel and my battery usage is now a couple of days on the MyTouch with Android 2.2. I am going to reload and tell it not to use GPS. I can always request the weather with a zip code where I am at that time.

    But those iSheep!!! They just KILL ME! You could not PAY ME to own ANY of that Apple garbage.

  106. chxxn

    my phone samsung galaxy sl was left 78% of battery during night but the next morning the phone was out of battery and i checked the battery mainly used for cell standby (> 60%). any solution? how to reduce the cell standby %??

  107. Tim Sullivan

    Helpful article and discussion. A new HTC software update from Verizon seems to help my thunderbolt. I use WiFi when available, 4G drains battery very fast: 4 hrs 4G v 12-13 hr w WiFi. I use airplane mode & sleep when not in use – turning off/on drains more than it saves.

  108. the AC

    I need to get back into programming, but in the meantime, is there an app that automates a lot of these steps that you can customize for specific battery levels? So far, no dice on search.

    Otherwise, great article. Hits all the good points.

  109. Loving Android

    my android lasts 2+ days… just turn off apps you dont need… :D

  110. DeQueezie

    This worked for me. I don’t need to have all the settings on while at work so I turned the GPS and WiFi off. I’ll just have to see how it works when I am out and about.

  111. HardcoreJuice

    I have on my samsung galaxy S,

    Custom rom with black theme (black is good to save battery),
    setCPU at 400mhz normally on-demand and 100mhz when screen OFF,

    I’m also using Titanium backup PRO to freeze and delete user apps and system apps that arn’t needed
    for “me”(USE extreme caution if you plan on freezing/deleting system apps!!!!)

    Autostarts is the best app i have ever seen for disabling apps from starting when your phone boot up.

    I have just recently changed my theme to black and installed setCPU + autostarts…
    But before that i got 2 days with heavy use

    What i don’t recommend is, DONT use Juicedefender if you dont use 3g/wifi that much, it will do more harm to your batterylife…. I have an unlimited data plan on my phone and i have since long have uninstalled juicedefender,…
    i even had ultimatejuice but it didn’t need it that much

  112. oketcho augustine

    Thanks for every thing explained but my problem is not solved still. can you just help me and explain to me what is cell standby and phone idle and how i can reduce it because its the hell consuming a lot of battery on my phone.thanx

  113. ravi

    great !!!
    the backlight timer and the brightness decrement has got a change in my battery lifecycle.
    when i turn on my netconnection the appplications get automatically updated.any one plz tell the soluion to this to disable it.

  114. Penetreitor

    Isn’t suspicious?, it’s incredible how much the wireless functions (WiFi, GPS) waste the battery than the normal 3g calls/data…
    I can bet they have an arrangement with the phone companies to force battery consume on other wireless connections than 3g, with windows mobile the battery quite different…

  115. Dave

    I have been back and forth to the Verizon store and I am sick of this phone. It looses way too much battery life. Also, the Google maps takes forever to load when using the GPS. Sometimes it does not kick in for 20 minutes or so while driving. Does this happen to anyone else? I am hoping they replace this phone as I think I have a lemon. This is by the way a ‘droid 2.

  116. Casey

    @oketcho augustine – I assume Phone Idle is the phone looking for network/data when it is in sleep. But Im not positive on that one. Im also not positive how to shut this off, other than using Juice Defender, whose main function is turning off data when the phone sleeps(among many other functions).

    If you click on “Cell Standby” it will tell you what % of the time your phone is without a signal, which is the likely culprit as to why its eating up so much battery. I have been known to be w/out a signal more than 50% of the day, since my reception is so bad at my work. So occasionally I leave my phone in my car, where it has better reception. Turning off 4G when its not available or your not using it might help. I’ve been using Phone Info lately for that, but there are many others.

  117. pravin

    superb tips …!! thanks a lot..!

  118. attishu

    Thx, nice article.
    I recommend two freeware software as the other commenters.

    The Juice Defender beta is help to minimize the unnecessary data connections and turn off the Wi-Fi, Bluetooth, GPS if the battery going too low.

    The Timeriffic help to setup profiles (example the data connection is not necessary for me weekdays between 10pm-6am and can change the volume, backlight, wi-fi, gps etc.) and working together with the APNDroid and RingGuard)
    With this two software my Galaxy S II working for two days. (approx. 2hrs talk, some music, ebook, game, few minutes gps and facebook using every day.)

  119. justin garnett

    It’s quite simple really.

    Disable DATA

    Disable 3G and use 2G only

    Set home screen to low back light and a blank wallpaper

    VOILA. 24 hours +++++++ of battery and full phone useage.

    If and when you need email, turn it all back on.

  120. AngieeMariee

    Thxz a lot i really needed this for my trip which takes 13 hours I know that I can’t last without my phone so I needed this

  121. Rajwan Ahmed


    Nice article please keep it up. can anyone guide me how to enable USB mas storage in galaxy fit..

    Rajwan Ahmed

  122. les

    @jerrod “when i check my battery it says “camera” for 96%? that doesnt seem right–i dont use my camera that much.”

    Me too… and i never use the camera!. Shitty phone or shitty Android? Mine’s an Orange San Francisco.

  123. David Ellis

    I’m not very tech oriented and fairly new at this. My LG Optimus was using a ton of battery like every 2-3 hours when I first got it so I began to investigate. Not really knowing what I was doing I made the mistake of going to settings-applications-running services to see what all was running. I wanted to “turn off” the app and went to stop service where it gives a warning about it wont work until started again. The part about “this may have undesirable on the application….” is what concerns me. I can’t seem to get these applications to work again like Market so I can download things like Juice Defender mentioned here. Can anyone help me? I really don’t want to do a factory reset and lose all my setups.

  124. Alina

    Okay I’ve never been so frustrated with a phone. I have carry my charger with me all the time. When first got the phone, a few weeks ago I wouldn’t need to plug in my phone for 3 days if a didn’t use it too much. I didn’t use any apps at first. Than slowly i only downlaoded a couple and even than I barely use it! Progressively my battery just kept getting worse and worse. It’s been gradual, very weird. One of my friends sent me a link to this website and showed me how to turn off all these apps and anything that potentially might be draining my battery! So right after I expected the battery to be extended. On my way home from work I called my boyfriend for 1-2min. Once I got of the phone I saw the battery go from almost have 1/2 to connect battery to charger. So when I got home at night I plugged in the phone and allowed it to fully charge, than I unplugged it! I did not use the phone the whole night and by morning the battery was almost fully drained! So I checked my battery usage to makesure I didn’t miss anything and it said cell standby 51%, and phone idle 50%. That’s totally unacceptable. I think I got a bad phone. I love this phone, but I can’t use it I need a replacement.

  125. chinoo

    What is the use of purchasing a mobile phone when it is not serving the purpose. Android platform no matter how fast it could be but is still lagging in terms of technology because could not fix the very flaw battery issue (no battery no use of features) that killing the very meaning of mobile device. I would rather use a dated o.s which serves my purpose substantially and is stable enough to keep me connected atleast for telephony.

    But i am hopeful there will a sensible platform for mobile phones, developed soon by sensible people who would restore the sense of mobile phones. Mobile phones are phones and computers are computers. Grow up. Thats why battery issue. putting wrong software on the wrong hardware.

  126. Gord

    Just looked over many comments for Tasker in Android Market. It INCREASES battery consumption a lot. Maybe shouldn’t be recommended in a battery-saving article.

  127. Mr Khan

    It is a very bad thing we have with all android phones.

  128. shania

    does it cost you if you dont exit everything from your task manager ???

  129. SUSAN

    i believe that the usage report is telling you…that of the battery usage that you had…51% was for one thing and 40% was for another and 9% was for another…it does not mean that 51% of your battery was used …it means that even if only 1% of your battery was used…then 51% of that 1% was for that particular thing…do the math, add up all the usages…it will round, but the total should be close to 100%… it is not how much battery was used

  130. jonathan

    setcpu for the win: underclocks to save battery & overclock for better performance

  131. EJM

    Just finished reading your article and all of
    the comments. That’s on my Optimus V, &
    still have 48% of my battery left. According to Browser’s app, that was about 1.8 MB of information. It only took
    2 seconds to capture, but hours to read.
    To conserve the battery I simply went from your web-page to Airplane mode;
    allowing me to turn the screen off, go
    to supper, come back, turn on the screen and read some more……repeat, repeat
    Sometimes ya just gotta rest your eyes.
    Well there. Just took it out of Airplane
    mode & all the text that I’ve written is
    still there. OK then, Submit Comment .

  132. Kevin

    I got my droid two weeks ago and I’m just curious…

    Instead of bothering with Task Killer, Juice Defender and all that stuff, why not just do what the article says to do (use the power widget to toggle wi-fi, GPS, etc. on and off)? Seems like those other apps are more trouble than what they’re worth.

  133. Shane

    I have a samsung galaxy indulge. Was getting 4-6 hours from stock battery even with turning off everything (gps, wifi, auto sync and background) for most of that time. got an extended battery ($15+/-) and universal clip type charger ($5) from amazon. First day with new battery turned everything on plus google maps at 3:00am. Left atlanta for savannah with navigation on the whole way.arrived about 8 am. Worked all day headed back to home at 9pm and still had over 10% battery juice. Definitely worth $20 I think.

  134. Gipson

    I just have to chime in here about batteries and battery drain.

    1) Both iPhone and Andoid phones (all cell phones in that manner) use Li-Ion batteries. This technology are good for about 300-400 full charge cycles. So if you drain your phone COMPLETELY every day, expect to replace it every year. +1 for Android phones where the batteries are replaceable

    2) Phones all use the same technology at the physical layer. If you’re transmitting data, it draws the most power. Also there is a window around a data transfer where it keeps the session up. 1 sync of 100kb is way less power than 4 syncs of 25kb. To sync, it also needs to wake up the processor. So by changing a sync from every 15mins to every hour, you do wonders for your processor. This is the same on iPhone or Android. It is the way the core technology work and has nothing to do with how Google (Android) or Apple implemented it. Install the same apps with the same syncing intervals and battery drain will be the same with this regard.

    3) Android phones such as the Galaxy series with AMOLED screens draw more power for their screens than iPhone. It looks better though so it is a tradeoff some people make.

    4) iPhone users have a euphoric view on their cell phones. The ignore the little annoyances because they feel blessed by the hand of Steve Jobs. An article posted by “scientists” illustrating how Apple products trigger the same part of the brain as religion.

    5) So if you want the same battery life as an iPhone, buy a phone with as small a screen as the iPhone (can’t get a Galaxy S2 or many HTC phones)… and as dim a screen as the iPhone (can’t get a Galaxy S or many HTC phones). And set up the same sync intervals and VOILA out of the box the same battery life. If you buy a bigger screen with the same size battery, you do the math. If you buy a brighter screen with the same size battery… same thing.

  135. Gipson

    Forgot to add:
    I’ve got a Samsung Galaxy S2. Straight from the store a month ago. Added tons of games and apps. Two e-mail accounts syncing every hour, Facebook, Google+, news feeds and weather downloading, etc.. No task killer or anything done other than the base operating system controls and I get about 30hr on a charge sending emails and talking on the phone, playing the occassional game to waste time. Course if I start streaming YouTube, it’ll only last a couple hours, keeping the screen on, data session active, loud speakerphone and CPU spun up to full power processing the video-feed.

  136. Dan

    The easiest thing to do is download quick settings for free on the market. But I wasn’t able to do the whole data auto data thing.

  137. Gipson

    Also note that if you have 5 applications all updating every 15 mins (i.e. email, twitter, facebook, news, traffic/weather), there is nothing syncing these up to all update at the same time. So you might have data activity 5 times every 15 mins which is every 3 mins. This will kill battery.

  138. Brett

    Is there a difference in using a white wallpaper vrs a black wallpaper

  139. Alia

    Some good tips but am really stunned to see that you would recommend AIRPLANE MODE in order to turn off wifi. This is absolutely the most idiotic suggestion ever – doing so will stop any phone calls & messages from being received. Yet you make no mention of this & people don’t always read comments. Task killers are debatable also.

    You can turn off the function of searching for wifi in the wifi settings and turn wifi only on as needed using the power widget.

  140. markp1989

    one app is recommend is “Watchdog lite” its a Task Manager (not Killer) you set the cpu threshold and it will notify you if a program uses more than that in the background, makes it very easy to spot misbehaving apps.

  141. XinTuS-1765

    Pretty cool intel, very helpul…

  142. Vortarulo

    Yes, of course. A white background uses as much LCD power as possible, because it’s all bright, while a black screen doesn’t eat any LCD power (almost). But the difference shouldn’t be that big.

  143. Millie

    k i have a android…. its a LG Shine Plus With Google. and its soooo slow!!!! it keeps saying ” force Cloes” and its really making me mad!!!!!!!!!!!! i would give it 4 1/2 stars but im giving it 2 stars because its so slow. when im trying to call someone it always freezes and it takes me a while. and sometimes i have to turn off the phone and turn it bak on hoping it will go faster!!!
    could it be becase the Lithiumlon polymer battery 2.7V in the phone??!! i dont understand!!!!
    i need help!!!


  144. n00dles

    My SGS is rooted and running the MIUI custom firmware, battery on light to medium usage lasts for about 2days.

    Some tips would be to perform a full calibration & power cycle on the battery, for those on rooted phones, download either Titanium Backup or Root Explorer and remove/uninstall/rename an app called TelocationProvider.apk. By removing this you will see a decrease in your AndroidOS % resulting in lesser drain.

    There are some who claim that by deleting the BatteryStats via CWM helps while others say its not good to delete this and takes longer for the battery to calibrate itself. Always give it a few full charges before you’ll notice a difference, allow the battery to calibrate itself (2 to 3 charges)

    The thing I did that I noticed the biggest change was formatting the entire SDCard and flashing a clean rom from scratch.

    Hope this helps some of you guys out there, I know how you feel, it drove me nuts.

  145. Gzoref

    I’m sure Juice Defender has been mentioned. It’s an unbelievably easy way to increase your battery life significantly. Another thing is to flash a custom ROM which is made to be lighter and more efficient. I can’t be 100% certain that it helps, but for my Fascinate it has greatly (I mean GREATLY) increased my phone’s speed, eliminated ANY lag time and just overall made the phone more enjoyable to use. I’m pretty sure it cuts battery usage too.

  146. RealZeratul

    @Brett and Vortarulo:

    No, actually for a LCD a white background is best energy-wise because the background light is always on, but a black area additionally needs to have the transistors for the individual pixels powered on. The effect is relatively small, though (and of course darker display settings still help because they affect the back-light and not the transistors).

    However, for AMOLED displays (and CRTs :D) it is the other way around, here you save large amounts of energy by using a dark theme/background, because an individual pixels battery drain is proportional to its brightness.

  147. bogs

    I’ve adjusted the display setting to the lowest possible level but the built-in battery usage screen still shows (display/backlight) at 80%. Need help.

  148. Jon

    Judging by the amount of stuff that you have to turn off, there is nothing left to enjoy in Android. I like the “openness” of Android but I will wait until the batteries get better before jumping into more than $600 affair that would cost me a lot of inconveniences.

  149. KyL3

    It’s a trade off that I enjoy making. Openness is just as crucial as the ability to put it to use. Batteries aren’t that expensive and you all make me schizophrenic. Good day.

  150. VZ

    I just switched from iPhone to Android. When I read the “Complete Guide to Maximizing Your Android Phone’s Battery Life”, it amazed me that all these features that attracted me to Android need to be turned off.
    One item they forgot to mention: If you turn off your device completely, the battery lasts a long long time :)

  151. shiv

    good advice! But you actually need not go through all this hassle – just get a good ROM installed!! I have a MOTO Defy and it lasts upto 48 hours and even more sometimes with normal use. When I’m on 3G / WiFi it lasts upto 36 hours. With lightning fast speed and such good battery backup, it not that bad I guess!!

  152. Amr saleh

    I’ve a samsung galaxy mini it’s a good phone, but thre same battery issue, when using wifi the battery getting down from fully charge to zero after about 2:30 hours, the task killer doesn’t save battery, it’s using more battery plus slowing the phone too bcz it killing the apps that not using any power, but just work as a virtual memory to take aless time to open it when needed,I tried to reduce my usage of the phone as a test,I didn’t use any data connection (wifi,gps, packet data ),I just use it as a phone & listening some music&I get a two days of battery life before need to recharging, absolutely it’s meaning I didn’t use the most of phone services& some of them need a internet connection all the time I think like news & weather widget, yahoo, youtube, market widgets all of them useless when no network connection, you can let the background data & location setting off when you using internet that will save battery & speeds up the data connection (up & downloading) too & just turn them on when needed, gallery is eating the battery too even when no video played so don’t use it if you don’t really need it, turn flight mode on when no signal or signal is week,bcz the phone using more power searching available network & you can turn it on at night too if you don’t expect important calls.I hope that helping you.thanks.

  153. Amr saleh

    Some thing else , don’t clearing memory (RAM) all the time bcz it working like task killer app & kill the services didn’t use power or battery, just be sure you end take from the android task manager after using them & clearing ram memory when you need (when the device hang or freezing)

  154. 4G Reaper

    I have an HTC Sensation 4G rooted and flashed with XE Rom for beats audio, will be going to cyanogenmod as soon as there is an official release with an overclock. I barely lose 70% battery in a day (8AM-11PM) and am a heavy music/data user, often multi-tasking with music/games/web browsing. Most ROMs are undervolted as well as overclocked, and don’t use much battery life. For the average user, you can completely turn syncing off, I noticed it was a major improvement on battery life, and as stated, WiFi drains less juice than data, especially since you can set it off with tasker and what not. Brightness is still one of the main keys for battery life.

  155. Galaxy

    My samsung galaxy mini is too slow when browsing or downloading even when using 3g(hsdpa7.2), any one know why???

  156. 4G Reaper

    Try using WiFi, 3g is slow to start with, but you could also go and disable background data under settings/accounts and sync i believe, that should give a noticeable speed boost.

  157. Galaxy

    Thank you fours advice,i tired all that things before, but it’s still too slow, when using 2g, the download is faster than 3g, even it suspend many times when I trying download files, and 3g signal is very low either (5 to 13 as maximum from phone status list), when compared to nokia x6 (that lower hsdpa about 3.6mps), the x6 was much faster than galaxy, some one told me that is a phone problem, so what you think??is it??? and thanks again.

  158. Galaxy

    Thank you,Finally I found the reason, it was a problem with my sim card,I change it and I hour more browsing speed.Thanks alot.

  159. 4G Reaper

    No problem, glad it was resolved :)

  160. 123

    Hi every one,i make simple test,i charged my phones battery to full,i enabled packet data setting (using 2g networks) & put weather widget on one of the screens I
    have, make some calls (23 m), listening to some music (about 1 hour & a half, very light usage (no browsing or downloading,, no watching videos, at end of day(after 22 hours), my battery usage 35%, that’s mean that enabling packet data all the time don’t affect very much of battery life, it j just how many services & widgets that using back ground data you enabled , so
    the android phones batteries life may be don’t enough for its great performance &
    services, but we can still learn how to
    user our phones & here some advices

    1) set your display brightness level to just what you need, for indoor using about 25:35% is very good, and adjust it when needed (like using your phone on sunny day).
    2) don’t enable many services or widgets that are using back ground data, just what you really need & use& set the refresh rate to average (i set up the weather widget to update every 3 hours).
    3) use a3g on-off widget to switching from 2g to 3g when needed (browsing & downloading), and back to 2g after finish, you can get the on-off 3g widget from android market for free.
    4) use wifi to access the web when available, it’s much faster than 3g& less power using.
    5) keep your wifi, bluetooth,gps,& rotation sensor disable if you don’t need them.
    6) don’t download, using a task killer app, it don’t do any thing positive, it just kill apps that the android system using as a virtual memory to be quick & less power using when using those apps again, mean that the task killer is using power to turn apps (don’t use any power) off, and getting system(device) slower & use more power to enable them again.
    7) as the task kilter, don’t clear your memory (ram) all time, it has the same effect of the task killer, just use it when needed (Device hang issue for example).
    8) don’t use your phone as a computer all the time and usea real computer when you can, use your phone as computer just when really you need like searching about an important things & informations when no computer available.
    I hop that helpful, the smart phones are great devices but manufactures really need to improve batteries, and I think they well.

  161. Johnny MMA fan

    ######## I have a samsung Galaxy S Rooted with a custom ROM.

    Roms make a MASSIVE difference on your batterys drain. One user pointed out that MANY of the ROMS he flashed on this phone gave him bad battery life at no more then 10 hours. A different rom (macnut11 if i remember correctly) gave him a huge increase. Keep this in mind.

    I’ve come to the conclusion if you’ve done steps like toggling data, brightness, removing widgets and auto sync and still see a big drain then its time to replace your battery. They can only last so many cycles.

    I’ve done all i can to reduce consumption and i get 8 hours tops WITHOUT data on. With it on im looking at 5-6 hours tops with medium usage.

    Another thing to point out is what MODEM your ROM or phone comes with. Changing that will result in a different outcome.

    It might simply be time to change your battery.

    Hope i helped you all!########

  162. Johnny MMA fan

    ############ Huge update by me for you guys just in time. I actually managed to crank out a ton more battery finally! I narrowed it down to two major things. Use the spare parts app to check your partial wake usage in your battery history. You’ll see whats eating your battery the most. Delete all the apps that you can do without. For me Tango was eating a decent percent and i never even use the app. Deleting it helped.

    Another thing is to drain your phones battery to about 15 %, Turn your phone OFF (VERY Important) ! Charge too 100% (Some phones might not reach a full 100% so make sure not to keep an eye on that)
    If you have root… Boot into recovery using your hardbuttons, go to advance, wipe battery stats. You should be seeing a few more hours at least. My old rom didn’t allow my phone to sleep and charge which is why by battery was off by a lot.

    These made a massive difference for me. XD Enjoy people.###########

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