Updating an iPhone SE
The iPhone is about 3-4 years old, and it started to cut off and back on. I don't know what the issue was/is but the phone needs an update. It won't stay on long enough to update
iPhone SE, iOS 16
Question marked as
Perform a Forced Restart on the phone. Follow the instructions very carefully, as this is a bit tricky. You may need to repeat this several times.
Force restart iPhone - Apple Support
There are only 2 possible results when you perform a Forced Restart:
1) The phone returns to normal operation, and you can now run the update
Or, if the phone continues to power off and on......
2) There is a hardware problem with the phone that will need attention at the Apple Store (make an appointment) or take the phone to an authorized Apple Service shop.
You can find a list of authorized service shops in your area using the link just below: