iPhone won't allow calls or mobile data because phone system won't allow update for 15.3.1 because Wi-Fi is not connected even though Wi-Fi is connected
What should do when can't make calls or use my mobile Data? I wake up one day and the phone shuts off my service when I just paid for it Prior. It keeps asking me to update to iOS 15.3.1 when I keep updating but it goes back to normal after done loading and says my Wi-Fi is not connected to device when it actually is. I've deleted update and re updated it over and over again, but still the same problem.
iPhone 7, iOS 15