iOS 15.4.1
I just upgraded and can no longer call out or receive calls.
iPhone 7 Plus
Question marked as
Best reply
See this Apple article: If you see No Service or Searching on your iPhone or iPad
If you see No Service or Searching on your iPhone or iPad - Apple Support
If you still don't have a 'service' after that, see -> iPhone 7 Repair Program for "No Service" Issues
iPhone 7 Repair Program for "No Service" Issues - Apple Support
See this Apple article: If you can't make or receive calls on your iPhone
If you can't make or receive calls on your iPhone - Apple Support