Automatically restart

Some software issue (bug) you can try factory reset

Contact your nearest customer service they will help you with it

Bro donot worry,
Go to settings and search '' auto restart'' and turn off that settings. Than you phone will work normally.

I'm facing the same issue .And I have tried the factory reset too but it is not working.
Please help me with the issue ,this affects me a lot. Sometimes during call,the call got disconnected and phone restarts automatically .
Even battery life is reduced.

Dear Samsung member,

Greetings from Samsung customer support.

Thank you for sharing your concern. We acknowledge your query and apologize for the same. And please follow the easy troubleshooting steps which might help to solve the issue.
Kindly use a genuine Samsung charger.

Note: We always recommend using a genuine Samsung charger for charging your device.
There are two methods to disable the auto-restart function
Method 1

Please follow the below steps:
Step1: Navigate to the app's screen and tap on Settings.
Step2: Tap on General management.
Step3: Tap on Reset.
Step4: Disable Auto restart (if enabled).
Step5: Auto-restart disabled.

Please follow the below steps:
Step1: Go to "Settings"
Step2: Tap on "Battery and device care"
Step3: Tap on Three dots
Step4: Tap on "Automation"
Step5: Disable "Auto-restart at set times" if enabled

In case the issue still occurs. Please register your concern in Samsung Members Application (Open Samsung Members Application > Get help > Send Feedback >Error report).

Thank you for writing to Samsung.
Warm regard,
Samsung customer support