This is slightly off-topic, but, didn't want to start another thread:
I have a T-MOBILE variant of the ONE (paid for in-full) & was curious what kind of compatibility can I expect on AT&T.
My coverage for both networks:
T-MOBILE : 4G (UMTS)
AT&T : 4G LTE
I'm looking to switch & get another phone, but, would keep the T-MOBILE ONE to use on AT&T if I can get at least 2G/3G to work on it. Othewise, I'll be selling/trade-in allowance for the ONE.
Any help/information is greatly appreciated.