Oh, those are not Apple certified pre-owned. Carrier refurbishment is completely different. You have situations where people buy and take the OEM parts and replace with third party then send back.
But it is.. It is 100% legit, Apple Certified Pre Owned, it went through the exact same process, came with the box. It was a brand new phone. Has the same 1 year AppleCare, I did choose to extend it. Its a mint phone. Or was when I got it. Still in good shape