Erase Your iPhone
If you’ve tried everything, and your iPhone still can’t connect to cellular, you might want to consider factory resetting your iPhone. Erasing all content and settings on your iPhone is a drastic move, but it will give you a fresh start and hopefully will fix the connection problems.
Keep in mind, though, that this will delete everything you have stored on your iPhone, so make sure to back up your iPhone beforehand.
To erase your iPhone, you need to:
- Open the Settings app.
- Scroll down and go to General.
- Scroll down again and tap on Transfer or Reset iPhone.
- Tap on Erase All Content and Settings.
- Tap on Continue and follow the instructions on your screen to erase your iPhone.
If you’re using an eSIM, do not select the option to erase it; otherwise, you’ll need to contact your carrier to get it up and running again.