Hopefully you already have your Apple Account settings configured to automatically back up the phone to iCloud, which is invaluable when you upgrade to a new iPhone and just for everyday peace of ...
Erase all contents and settings will erase everything, including biometric data such as fingerprint scans from your Mac. The process is different depending on which macOS version you are running, so ...
Once done, restore your iPhone from your iCloud or computer backup. However, if the problem continues after restoring, there may be a hardware-related issue with your iPhone. In that case ...