If you recently replaced your iPhone’s battery (or had it done by an authorized Apple technician) and you’re still experiencing battery life problems, there are a few fixes you can try that might help.
If you haven’t heard, Apple recently began throttling iPhones that have old, degraded batteries. The one fix (without buying a new iPhone) has been to replace the battery with a new one, which can be done by Apple for $30, but it’s also not terribly difficult to do it yourself.
However, if you’re having issues after having replaced the battery on your iPhone, there are a few things you can do to fix it, including performing a hard restart, calibrating the new battery, or replacing your replacement battery.
Perform a Hard Restart or DFU Restore
For starters, the easiest thing you can try to fix any problem, including this one, is simply restarting your iPhone.
If that doesn’t work, then the next step is performing a hard restart, which is a trick you also can use when your phone won’t turn on. How you perform a hard restart depends on what model iPhone you have:
- iPhone 6s and earlier: Press and hold down both the Home and Power buttons for around ten seconds. Let go when the Apple logo appears.
- iPhone 7: Press and hold down both the Power and Volume Down buttons for around ten seconds, until the logo appears.
- iPhone 8 and newer: Press and release the Volume Up button, and then press and release the Volume Down button. After that, press and hold the Power button until the Apple logo appears.
If performing a hard reset still doesn’t fix your battery issues, you can try a DFU restore, which will completely wipe your iPhone (so make sure to back it up), as well as force an update to the firmware, if there is one.
Calibrate the New Battery
If you replaced the battery yourself using an iFixit kit, then you probably were told in the instructions to calibrate the battery. However, if Apple replaced your battery, they likely won’t do this for you. So it may be worth a go if you’re having battery life problems.
Calibrating the battery is pretty simple, but takes a bit of patience. Just drain the battery until your phone completely dies, and then charge it all the way up to 100% without interruption. Boom, your battery is now calibrated.
It’s good to do this every few months anyway in order to keep the battery percentage as accurate as possible, but it’s also something that could jumpstart a fresh battery in an older iPhone if you’re having some issues there.
Replace the Replacement
If none of the above have worked, then it’s likely that the replacement battery is a dud. It’s rare, but it happens.
If you had Apple (or an authorized repair shop) replace the battery for you, go back to them, tell them about your problem, and what you’ve done to try and fix it.
If you replaced the battery yourself using an iFixit kit, you can contact iFixit and explain your issue. This is what I had to do with my wife’s iPhone, which was still acting up after replacing the battery. If need be, they can send you a new replacement battery free of charge, and that should do the trick.
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