Help No signal since software update


There was a message to do a software update yesterday. I plugged the phone in and did the update.

Since then, I have no signal anywhere I go. The phone now ONLY works in WIFI mode. I can send and receive text messages and make and receive calls as long as I am connected to a wifi signal and wifi calling is turned on.

When I signed on to do troubleshooting via chat yesterday, the rep told me the only solution was to wipe the phone and do a factory reset. I do not want to do this. There must be a simpler solution that doesn't involve erasing all my data??