In Pictures: Top 25 network and IT industry stories of 2012

4G Nation

The battle for 4G LTE wireless supremacy heated up in 2012, as AT&T, Verizon, Sprint, T-Mobile and others took to TV, radio, the web and anywhere else that would put up with them to make their claims for having the biggest, fastest and fanciest network. The carriers have invested and are investing billions to upgrade their networks, as the U.S. has become one of the fastest-growing 4G markets. As 2012 wound down, the best that we can figure is that Verizon had the most LTE markets at 440, AT&T has the most 4G when you toss in HSPA+ and T-Mobile has the fastest . And Sprint, a late starter, is working hard to get in the mix.