Last December, I gave my wife my upgrade. Her line is now currently available to upgrade, but I need to know a few things first. One, if I preorder the upgrade using her line number, will I have to activate the phone on that line? Secondly, when I upgrade using her line, will I ONLY be able to do so in the AT&T store (as I have been told I will have to). I have a launch day 3gs and want to move on to the iPhone 5, but I need to figure this out first.