AT&T's been a step or two behind Verizon when it comes to LTE, something AT&T feels is justified given the faster speeds their HSPA+ service provides over Verizon EVDO. Regardless, AT&T still sits about a year or two behind Verizon on the LTE front. Verizon's already covered about a quarter of the country's population with LTE, plans to have the entire network built by 2013, and this week received a lot of attention for their plans to implement voice over LTE in 2012. Not to be left out, AT&T says that VoLTE will show up in 2013 as part of a seven year roadmap to "evolve voice services on its network" which, like Verizon, ends in the death of older unused platforms:AT&T insists they will allow LTE VoIP apps from outside companies and suggests they'll offer some of their own ahead of official VoLTE standard support in 2013.