One UI6 update in s21 Ultra

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I have updated as 21 Ultra to oneui6 and since the phone has been automatically restarting and shutting down at random many times in a day I am trying to find a solution but I cannot

Please update the software

[AmitBhatt89]

I have the same phone with the SD variant, but no issues at all.
Minor bugs are there but overall working perfectly.
I suggest a fresh format after backup.

If you want to report this, you can send a bug report to samsung.

[Rohit004bharadwaj]

Very bad 😔, been through this problem.. don't know how but some how rectified self

[cs_member10]

Dear Samsung Member,

Greetings from Samsung Customer Support!

As per your query, we would request you to kindly perform the following steps to resolve your issue.

Kindly use a genuine Samsung charger.
Note: We always recommend using a genuine Samsung charger for charging your device.

Disable the auto restart function
There are two methods to disable the auto restart function

Method 1: Settings>General management>Reset>Disable Auto restart (if enabled).
Method 2: Settings>Battery and device care>Three dots>Automation>Disable "Auto restart at set times" if enabled

Check your device in safe mode: https://www.samsung.com/in/support/mobile-devices/safe-mode-on-samsung-phones/

Update the software if available: https://www.samsung.com/in/support/mobile-devices/samsung-galaxy-smartphone-how-to-update-software/

Reset your device: https://www.samsung.com/in/support/mobile-devices/samsung-galaxy-mobile-how-to-perform-a-factory-res...

If the issue persists kindly report the problems with a log file. To share a log file, click on the Samsung Members Application (Open Samsung Members Application > Support> Tap on error report > Type your query > Send).

Warm Regards,
Samsung Customer Support

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Factory reset doesn’t work 

Going to service center also doesn’t work 

what are my option