I've had this issue for over a week, at first I thought it was a problem with my provider (EE) and contacted them. They've checked and said there's no problems in my area, I've also confirmed this by swapping my SIM to my wife's identical phone & it works in hers. Her SIM doesn't work in mine and it does the same thing. I have tried restarting the phone, toggling airplane mode, resetting network settings under EE's instructions, using the diagnostics on this app (no problems detected,) manually selecting my carrier (fails), selecting both 4g & 5g preferred all to no avail. My software is up to date and I very occasionally get a signal within a 5 mile radius, I'm thinking of claiming off insurance to get it looked at but it will cost me £100 so wondered if there's anything else I can try.
