Question: can a at&t iphone be used on verizon?
Answer: No matter where you bought your iPhone, you could bring it to another carrier as long as it was unlocked. ... That means you can't use an AT&T or T-Mobile iPhone on Verizon or Sprint, since those versions don't have CDMA chips. (You can, however, take an AT&T iPhone to T-Mobile, or vice versa).