My whole family is signing up for att (4 lines)and i want to get an iphone. Now if I go through att and get some cheap-o phone then go buy an iphone at the apple store, do i have to unlock it? I know that sounds weird, I didnt really get what the sales reps was telling us for she was telling me i would have to have service with apple and att ? I guess cause I cant buy one directly from att, i have to go get one from the apple store and get it unlocked? Or can i just buy a regular iphone that same day and and then activate it online? I really dont want to get an unlocked one. Please enlighten me on this.