I guess it was the carrier, Patriot is a "third party" and has limitations according to their support line, it never connected, and we tried for an hour, but the phone did not report a message to indicate it was SIM locked, I got an AT@T prepaid and it works great...basically same low rate too. I had reflashed to android and upgraded to Android 11 verified it worked, then flashed UT which was successful the very first try. A lot works on the Pixel too.