As a telecom customer to me the SIM lock does not matter. Had put on as part of a contract extension my phone. I agree here but the critical voices like on: the SIM lock to Amazon will have done a great disservice. No one who is already in a T-competitor has a fixed-term contract will be nailed for this phone a second contract to his forehead. Many colleagues and acquaintances of my hand, have in fact omitted for precisely this reason to purchase this Phones.
The device itself is good, I am very satisfied. But the smartphone world is not exactly reinvented hence.