So heres the story...couldn't get online on preorder day, so I went to the AT&T store over lunch and had them do it. Everything went fine. Then my brother tells me over dinner that he didn't get a chance to go out, and asked if I could do it for him since he had a baseball game. Go back out around 630, and everything is fine except for the fact that his phone will probably be backordered. Flash forward 2 weeks, and I realize that AT&T made a mistake by having my phone shipped to the store. Wouldnt be a big deal, but my brother's phone is shipping to our house, and is coming TODAY! Since I placed my preorder first, and placed his for him, my brother is letting use todays phone, and he'll wait for tomorrow. So, can I use today's phone and activate it with my number no problem? The phones are attached to any account yet, right?