Talk:United States/@comment-26674008-20160108102128

There is maybe an update to be made to T-Mobile, but with some subtlety. T-Mobile has now rolled out much more widespread coverage on 700MHz (band 12) for LTE only, in addition to their existing LTE and 2G/3G network.

This creates an odd situation where theoretically, devices that support LTE band 12 may get data LTE coverage in some area where T-Mobile does not even have 2G or 3G. Currently, the only device sold overseas that I know is affected by this rollout is iPhone 6S.

Other LTE phones may support LTE band 12, but in fact may have no voice or SMS capability at all in these LTE-only areas, without VoLTE support. I do not know if T-Mobile will even allow a phone to use LTE band 12, unless it is an explicitly approved device, for this reason.

If you are on iPhone 6S, the situation is much simpler, and it seems T-Mobile's coverage is much more desirable now for data, if you have such a new iPhone.