According to your description, I suggest you try the following methods:
1. Erase data attempt: Settings-More-Application Manager-All -S Health-Erase data-Restart the phone.
2. Check whether the mobile phone has recently downloaded and installed third-party software. It may be that the software is not compatible with the mobile phone, so I suggest you try to uninstall it (Settings-More-Application Manager-Select Download-Uninstall).
3. If it doesn't return to normal, I suggest you back up your mobile phone data (phone book, SMS, multimedia files, etc.). ) and restore the factory settings (Settings-Account-Reset-Restore Factory Settings);
If the problem still exists, it is recommended that you take the three-guarantee certificate of your mobile phone to the nearest Samsung service center for testing. Please visit the specific service center address:/support/location/supportservice.do? Page = service. Location and place. cid = cn _ PPC _ support _ service _ repair net _ 120522
Welcome to Samsung service to make an appointment:
/reservation