Chosen Solution

Hey all, Just a general question. So I have a nice iPhone 7 128GB that came across my desk that wont recognize any of the SIM cards I put in it. All SIM cards are confirmed working on their separate carriers. Now, I put a VERIZON card in it and the phone recognized the service, but came up with a “Network not Recognized” error. So I’m kinda stuck. Any help? I was thinking this could be a China bought iPhone?

See if any of the SIM cards pins bent, also you can just look up the model number to see what carrier it is.