Hi there! Question... I'm currently an AT&T customer. I just purchased a "device only" AT&T from the apple store at full price. Last year when I did that, it was unlocked... The employee told me that this phone would be locked to AT&T, but I'm a bit confused as I paid the full "device only" price. I travel internationally a fair bit and I also may switch to t-mobile at some point so unlocked is important to me... It is still sealed in the box so I can take it back if I made a bad purchase. Thanks!!!