According to the situation you described, I suggest you:
1. Try to turn off the phone again or go to Phone Settings-Application Manager-All -S Health-Clear Data.
2. 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;
3. If the problem still exists, it may be that there is something wrong with the software of the mobile phone system. It is recommended that you take the three-guarantee certificate of your mobile phone and send it to the nearest Samsung service center for testing. Please visit the specific service center address:
. Samsung . com/support/service locations . ASP
If you need help, please visit support.samsung.com.cn, and official website will provide you with multi-channel service support!