I am planning on getting an iPhone 5 on the first day. However, my contract is not up for upgrade, so AT&T told me that I should add a line for $10 a month to the family plan and sign a new contract on that new line so I can get the phone for $200. Then I can switch the iPhone to my current line and not use the added line. All in all, it works. However, is the Apple store able to add lines and switch phones to different numbers? I don't wanna wait in line early morning to find out that the Apple can't do that. I'd just go to AT&T if they can't.