I've been reading on here for the last few day to try and answer this myself but can't find anything. I used my upgrade to order an iPhone 5 but was able to walk into the apple store and by one on launch day using another one of my lines. I took it over to the AT&T store to see if the could make sure it wasn't linked to my account and the guy said he'd have to open the box to do anything. He also told me if I sold it without activating it first I'd be charged full price for the phone. Anyone know if any of this is true and how to get around it?