iPhone keeps restarting itself every 3 minutes
Solution 1:
Since using iTunes to restore the iPhone can't solve this problem, the following method is worth a try:
- Restore all settings on your iPhone.
- Update all applications or remove potentially conflicting applications
- Remove the SIM card from the iPhone and check if it stops restarting
- Check and clean the charging port
- If you restart when charging, please replace the iPhone battery Finally, it is recommended to contact Apple officials for the best solution.
https://www.fonecope.com/fix-iphone-keeps-restarting.html