In a recent tweet by T-Mobile’s CEO Ray Neville, he shared a document that basically lists the markets that are already covered by the carrier’s LTE-A network. As it stands it appears that the list is huge at over 930 markets, with about 430 being able to take advantage of the trifecta of connections, such as carrier aggregation, 4×4 MIMO, and 256 QAM. We expect that over time T-Mobile’s coverage will expand to cover even more markets, so if you don’t see yours listed, it should be covered eventually.
For those who aren’t covered by the trifecta, not to worry as LTE-A will still provide a speed boost all the same, and users won’t have to do anything to take advantage of it, save for owning a compatible device. We should note that most handsets released in the past 2-3 years should be LTE-A compatible, but there is a list on Wikipedia that you can check to see if your make and model are.