Today, for the first time I got a cellular error message unable to connect as it searches for a signal. The attached are the 2 messages I have recorded. It seems to be a hardware issue, after an hour with apple help I had to make an appointment to take the phone in. Possible e sim issue? Anyone encountered this?
support.apple.com
If you see a Cellular, Ultra Wideband, or Apple Pay Issue message after an iOS update or restart - Apple Support
If one of these messages appears, iOS or iPadOS diagnostics detected an issue on your iPhone or iPad that might require repair.