I am trying to purchase an iPhone 6 as a gift. So I wanted to be able to walk out of the store without having to activate it, or sign up for service. I know I will have to pay full retail price - but can I do that at an AT&T store or Apple store? I tried to do it online & over the phone, but they told me I had to activate the phone first - even if I was paying the full, non-commitment price....... Any help would be appreciated!!!