I had originally preordered a T-Mobile hoping that it would be unlocked so I could use on AT&T. I decided to take the safe route and get the AT&T phone(which they allowed me to switch in store). I was paying full price/device only anyways. When I got home and plugged in to itunes, i got the "Congratulations, your iPhone has been unlocked" message So I can confirm, device only purchase will be unlocked.