I've got a question that I hope some of you can answer. I plan on purchasing the iPhone 5 tomorrow under a line that is not mine. This person is eligible for an upgrade, but does not require a new phone. I plan to use their upgrade eligibility to purchase the iPhone 5 at the discounted price, and then use the phone as my own. I already contacted AT&T about doing this and they said I could. However, with the new SIM card format, this obviously requires more than switching SIMs. Will I be able to activate the phone under my phone number in the iTunes setup? Or will I need to go to an AT&T store to get the phone activated for my number? Thanks, and if this isn't clear I can try to explain it more clearly.