My father currently is eligible for an upgrade through AT&T (we are NOT on a family plan) and has no interest in anything besides his dumbphone. He offered me his upgrade if I could figure out a way to do it. Since the SIM cards are different sizes, we can't just go to the store and have him port to the new iPhone and then pop out the SIM card and put it back in his old phone. My question is about new iPhones that are shipped. He can have a new 4S shipped to his house and then have it set up through iTunes as a new phone. However, will it already be locked into his number? I was hoping to do a restore etc. from my iPhone 4 file.