Hi guys, my phone keeps randomly shutting down and rebooting,any idea on how

[amaanlol]

My phone keeps restarting and shutting down any idea on how to fix it?

[Neo001]

Hi,

How often does this happen? And are you on beta?

[Obsydian]

What phone ?

[BandOfBrothers]

Assuming your phone isn't set up to auto restart in it's settings which means it happens at a pre set time i.e  https://www.samsung.com/uk/support/mobile-devices/restart-your-galaxy-phone-regularly-to-prevent-it-... 

can you try the following generic troubleshooting guides.

And ensure your phone and apps are up to date.

• Clear Cache Files from the phone's System Partition Section  > https://www.samsung.com/uk/support/mobile-devices/how-do-i-clear-the-cache-on-my-device/ You may need to insert your earphones or hook upto a powered On Laptop to access the Clear Partition Section. This may help with lag or stutters as this clears the phone of old/unused or broken cache files.There is also a Repair Apps option in the Menu System too. 
• Safe Mode  > https://www.samsung.com/uk/support/mobile-devices/how-to-start-my-galaxy-device-in-safe-mode/ turns off downloaded apps and themes etc which may highlight an app or theme that's causing conflict.
• Last resort back up and factory reset.
• Let a Samsung Service Centre have hands on.