Hey guys, I'm currently an AT&T user and I'm not yet eligible for an upgrade to get an iPhone for the subsidized price of $200. I desperately need a new phone however as the phone I upgraded to uses an awful operating system with constant glitches and issues galore. So here's the thing, my mom is currently eligible for an upgrade, but she never uses them. However, if I used her upgrade, she wouldn't want to use my current phone (by swapping lines). So I was was wondering whether one of these two solutions would work. Solution A) She upgrades to the iPhone. Then, takes her old phone and puts that back on the line. Then I take the iPhone and put it on my line. Solution 2 (This works on other carriers for other phones, but I'm not sure about AT&T) She upgrades to the iPhone. The next day, we swap the phones on the lines by calling AT&T. She then replaces my old phone with her phone. Any suggestions? I'm going to college in a month and would really like to have a different phone than what I have right now, so this is my current plan.