I've had t-mobile for a while. Coverage is spotty depending on where you're at. A couple months ago I lost all connection while sitting at my desk at home. Call to T-mobile discovered they had shut down a bunch of older transmitters and my phone was depending on those to connect. New phone later, I haven't had any problems since. However I haven't really taken it out of town yet. I do have a cell phone booster with external antenna for those fringe areas, not sure what I think of it yet still experimenting.