After Verizon’s (s vz) early adoption of LTE gave the carrier a commanding 2011 lead in the battle for data speed supremacy, things are heating up considerably in 2012. AT&T (s t) is aggressively rolling out its own LTE service, Sprint has promised LTE later this year, and T-Mobile isn’t far behind. At the moment, though, AT&T and Verizon command the data speed battlefield.
