4G LTE may be the big thing today, but in the backrooms of wireless carriers, 2G is a seriously important talking point, too. Why? Because it's old, and it needs to die. Remember the days of "analog phones" being forced to digital? We're staring at the next major leap, with AT&T reportedly urging customers to upgrade from 2G-only networks. It costs loads of money to keep aging 2G networks online for only a comparably small amount of people, and MarketWatch is reporting that the carrier has started to send notices to some 2G customers in recent weeks: "Your current, older-model 2G phone might not be able to make or receive calls and you may experience degradation of your wireless service in certain areas."
The program is, of course, voluntary, but as time passes, more and more pressure will surely mount. It'll still be a few years (at least) because 2G holdouts begin to have serious issues, but hopefully by then they will have upgraded to the Galaxy Nexus IV or the iPhone XX.