I know there have been several threads on this, but curious to know anyone who recently bought the 5s T-mobile contract free full price from Apple.com whether it was unlocked and were you able to use your AT&T nano sim with same LTE speeds as you would buying the AT&T version? I understand hardware wise that the AT&T and T-mobile versions are exactly the same, just trying to confirm if the T-mobile contract free full price from Apple is indeed unlocked. Apple support is oddly untrained on this topic. I can only guess they are sworn to secrecy by a T-mo marketing agreement. Thanks!