Trading my iPhone 4s to an iPhone 6?
Since the iPhone 4S was released i have bought it when i was in Florida/California but it was unlocked so when i go to Egypt i won't have a problem with my sim card, recently i have heard about trading up ur old iPhone to an iPhone 6 with an exchange of a few dollars but with a contract, so if i travel to Newyork or California can i trade my iPhone 4S to the iPhone 6 without a contract and i can pay the rest of the money or i will have troubles?
iPhone 4S, iOS 8.3