I googled my question, but nowhere really gave me a straight answer that I was looking for. Here's my scenario: I am on AT&T I upgraded from my 3GS to 4S on release day. (Would have waited, but that retina display was so enticing). Obviously, my 2 years has not been up. So I asked my dad who is on a dumb phone line if he was ever going to bother using his upgrade. My dad, a man of simple tastes said no and that I could have his upgrade. Now, I plan to preorder the iPhone 5 online through Apple's website. What info do I need in order to accomplish this? I am an authorized user on his account. And do I preorder with a data plan on his line, wait for the phone to come in and then go into AT&T and tell them that the phone is actually for me? Let them activate the nano-sim for my line and then cancel the data plan on my dad's line? Will there be a charge shown on the bill for the data plan or can it just be cancelled like no big deal? I've never had this experience before, so some help would be appreciated. Last year I just pre-ordered through Radio Shack quietly and made myself an authorized user and was in and out in 10 minutes.