bought an iPhone 2 days ago, had to exchange it because of multiple dead pixels. Got it home and I hooked it up to iTunes and started the activation. filled in my info and it popped up with a message that said "Activation could not be completed on current sim card, use sim card that came with iPhone or get a replacement from at&t" well i was using the sim card that came with it, so i went to at&t and asked them for a replacement, they didn't even know where the sim card was located. so I brought my new sim card home and got the same activation error. So yesterday i took it up to the apple store, told them my problem, they didn't even look at it, they just then a new iphone at me and sent me on my way, i got it home and it has the same problem. So now after my soul has died. I am out of ideas, I'm kinda tired of going to the apple store. I read someone had a similar problem and their solution was make an emergency call and it asked them to deactivate the airplane mode. i tried that and it didnt prompt me. any other ideas...Please...