AT&T subscribers, we know that the carrier hasn’t been as aggressive as Verizon when it comes to rolling out more 4G LTE coverage, but we guess better late than never, right? Well the good news is that AT&T has activated LTE in 12 new markets and according to the carrier, these 12 markets will be able to make full use of the carrier’s LTE network come “April, May, and into the early summer”.