2G is shorthand for the second generation of cellular technology. Originally deployed in 1991, 2G introduced several important advances in cellular technology including: digitally encrypted conversations, more efficient use of available radio spectrum, and–most significantly–the first mobile data services, starting with SMS text messages. With modern optimization, 2G networks can, under ideal conditions, deliver data at speeds up to 150 Kbit/s.
2G replaced the 1G cellular technology (which was strictly analog), and was superseded by 3G and 4G technologies starting in the late 2000s.
- By Jason Fitzpatrick on 03/27/13