Has anyone successfully unlocked and AT&T iPhone? I am asking because I am picking up the 5 tomorrow and have a buyer lined up for my 4S and she is on T-Mobile so she needs it unlocked. I am aware it needs to be off contract and that an online form needs to be filled out. Is there anything I should know about the process? How long did it take for you to see it unlocked? How did you know it had been completed?