Since the iPhone 4 comes with a micro-sim card will this effect activation if you have your phone shipped to your house? Will iTunes know your phone number and stuff and automatically apply it or will we have to call AT&T and activate that way? Just curious because im not really sure how the activation is going to work. My phone is being shipped directly to my house so I expect to be able to activate it on my PC with no help from Apple or AT&T. Thanks in advance!!!