Believe it or not, there are over one million iPhone users in the United States who cannot access 3G networks because their carrier of choice is T-Mobile. Apple’s smartphone isn’t officially available on T-Mobile right now — because the operator’s unique 3G network isn’t supported by the handset’s wireless chip — but people choose to use its 2G network instead.
That situation will change for the new iPhone, however, because T-Mobile has announced it will launch a new LTE network next year.