My iPhone doesn’t work even though it used to
when I’m not at home connected to my WiFi my iPhone doesn’t work even though it use to.
[Re-Titled by Moderator]
Question marked as
No service
Go through the various suggestions in the support article below but if they don't help, and your network carrier can't help, then contact Apple Support for further investigation.
Support article:
https://support.apple.com/en-us/HT201415