I bought a new AT&T iPhone 5 (32 GB) in October from an Amazon seller, and bought AppleCare myself in an Apple Store in New York. I also purchased an unlock from unlockfusion back then. During the last month, the sleep-wake button has become unresponsive, and it only functions if I click on the left side of the button. I currently reside in Israel and I'm about to fly to the UK in 2 weeks, and I wanted to take my iPhone to an Apple Store in London and ask for a new phone. My questions are: 1. Is it reasonable to ask/receive a new iPhone in that case? The phone is in great condition. 2. Will I get an unlocked iPhone when I exchange it? 3. I'm afraid that the new iPhone will require a new activation when they replace it, and that it will ask for the original seller's SSN. Does anyone know if it will ask me that or require an activation of some sort? Thanks a lot.