I want to buy an iPhone 4/4s for my mother and i was curious if an iPhone 4 (AT&T) unlocked would work well on t-mobile. or (i know that iPhone 4s AT&T are capable of handling AT&T's 4g network) if the iPhone 4s would be able to handle Tmobile's 4G network unlocked.
Thanks in advance for the help.
Thanks in advance for the help.