Samsung

Lol hahahaha .. I think youre the alien not the food I ate ahaha

ok then . Go and Bring your phone at the nearest service center .

How about this ? Go to settings , search auto restart . Check it out . If you already done doing this . Then you may bring ur phone at the nearest service center

Try to check this out . Go to Device Care , tap the bulb icon and you will see this .. Try to check if auto restart is enable or not

I talked to them thru chat , they escalated the issue to the other dept . Im waiting for their response thru email too.