My dad would like to upgrade, but Apple never has any t-mobile versions in stock in store. I found one available for AT&T, but even when you choose pay full price, you still need to enter your information for AT&T as if you were using AT&T next or upgrade program.
Can I use my AT&T number/info and once activated, swap his sim card into the phone?
Can I use my AT&T number/info and once activated, swap his sim card into the phone?