Cannot text or make calls without WIFI
I am having trouble getting my phone to work on a cellular connection. I have restored the phone to factory settings several times and went through activation process. The phone shows 3G/4G LTE connections available and they are good strength. I can do everything normal on WiFi but when I turn off WiFi the messages and phone calls just keep trying to send without connection. I get an error that says OOps communication with the server was not possible. I have updated all four areas in settings.