Phone acting weird

[Ak907]

I have a s22 ultra, and for the most part it has been great. However lately it has been turning itself off, so far it's happened 3 times over the last month.  Then today I was watching YouTube the screen went black then almost immediately it entered download mode. 3 or 4 barcodes popped up then the blue download screen with other languages was displayed. It seems like it is doing more and more stuff on its own and am wondering if this is normal? Or how I can take back control lol. 

[TechZilla]

Have you tried using the diagnostic tool on your phone to check for faults?

[TechZilla]

The phone diagnostic tool can be found when you enter the Samsung members app and at the bottom right of the screen click on support and you will see it on the next screen.

[ArjunTech]

Same thing happening to me since April update. Hoping 6.1 update resolves it

[Members_YpT79Ba]

Hello, Samsung support team is not helping at all. Samsung did not give us a clear explanation of the problem.

The solution for many people was to replace the motherboard.

What can you do when the phone is more than 2 years old, pay to repair a problem that comes from an official Samsung update?

This is unacceptable for an expensive smartphone like the S22 ultra.

Please, we need a precisely answer and know if the problem is software or if the hardware was affected. At least, an official answer that says that Samsung is seriously investigating the problem...