S21ultra shuts down randomly

[joannajo]

Anyone else having this problem, it's driving me insane! 

I always make sure I have it on charge overnight so it's ready for the next day, some days it'll just randomly shut down & restart.

Purchase from Samsung November 2021. 

[AndrewL]

@joannajo: Can you try heading to Settings > Battery and Device Care > Auto optimisation, and toggle off 'Restart when needed' if it is active? 

[joannajo]

Thanks I'll give that a try.

[XTWXTOMEHAWK]

I have it off and still not working