I can't use Wi-Fi calling on my Apple iPhone XR iOS 13.0

Cause 3 of 4: The operator settings haven't been updated to the latest version

If you can't use Wi-Fi calling, you may need to update the operator settings to the latest version.

Solution: Check if there's an update for the operator settings in "About" in your phone's settings.

Apple iPhone XR

Did this solve the problem?

Yes - All solved No - Go to next cause

Get information on...

Or select...

Another device