When I inquired about exchanging my supposedly defective iPhone she asked me "Do you still have the box?", I said "Yes", and she said "Great. Bring that in and we'll exchange it out for you". So I know for sure the box, and so I'd assume everything with it.
Couldn't hurt. My original iPhone was from the att store as well. At first Apple gave me a song and dance about having to exchange my iPhone at att instead. I told the mac genius i was talking to that it was made clear to me at the att store and everything i had read and researched to that point about the iPhone that Apple was responsible for iPhone support. So she went in the back for about five minutes (i assume to talk to a manager) and came back out with a new iPhone for me.
So if they give you this "its two different companies so we can't exchange it" crap, push harder and they'll probably give in. Or i guess you could go to the att store you bought it your phone at first and see if they'll exchange it, but i'd go with the Apple store, att employees for the most part a pretty clueless about the iPhone.
Ha, it might get to that point--i hope this is my last one.
The first iPhone went crazy. First safari crashed all the time, then any internet app, then settings, then pretty much any app. Then the iPhone rebooted on its own and there was nothing on the screen but a yellow yield shaped sign with an "!" in it. Underneath the words "connect to iTunes". I connected to iTunes which prompted me that my iPhone was in recovery mode and i should restore it. So i tried once, twice, five times to restore it before it finally worked and the iPhone still crashed afterward and to top it off my contacts no longer showed up.
My second iPhone wasn't nearly as dramatic. I scraped a car in a parking garage and wanted to take a picture of the damage. I push camera app, iPhone reboots. Try again, same thing. Third time, same thing. I came home and restored the iPhone and the camera didn't crash anymore, but it also just showed a black screen instead of what was in front of the lense.