IOS install help
when i try to install ios 15 IT DOENST LET ME IT SAYS YOU ARE NO LONGER CONNECTED TO INTERNET BUT I AM THE THING IS THAT I DON'T HAVE SERVICE ON MY PHONE BUT I HAVE WIFI.
iPhone 7, iOS 13
You need both WiFi and a cell service to do an iOS upgrade.
You can try doing an upgrade using a computer.
Click on this link for instructions on how to update your phone using a computer
Update iOS on iPhone - Apple Support