A couple weeks ago I bought an iPhone 7 (Model A1778) in Malaysia and it worked fine with a sim card from a local cellular company. After I got back to the states I went to a Verizon store to get a new sim card. Verizon employees spent over an hour trying to figure it out, then they said since I bought this phone in a different country, a Verizon sim card is not compatible with my iPhone.
Is this true? Or is there a fix to this issue? I've tried updating to iOS 11.4.1, resetting network settings, reinserting the sim card but to no avail.