What is the reason why your phone doesn’t allow you to make or receive any calls and every time you try it says call failed I’ve tried almost everything on my settings and resetting my phone and it has not been working
iPhone 13 Pro Max, iOS 15
Try first to optimize the range of the mobile network, 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
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
phone issue
