I made the update on the 6th January and since then the phone restarts overnight and alarms will not work which is causing me issues. I've tried everything suggested in this thread except factory reset which also doesn't seem to work.
Sent mine in to samsung and they did an update to the phone while they had it. Been 4 days now and it seems to run smoother with no issues or restarting. I have tried to max out the phone to make it restart like it had previously but it is handling well with no issues what so ever. I think this is the best best to resolve issue. They even sent it back with a free s-pen and silicone cause for the troubles. Mine was restarting upto 4 times a day and was replace to have the same issue the next day, so I sent it in as my last hope and so far so good. Hope this helps.
Hi guys I just wanted to mention that something similar happened to my S21. And in my case, it was related to the way I charged my phone. So, I had this very long zoom meeting and my phone was dying so I plugged my phone to a USB port extender plugged to my laptop. My phone was charging super slow probably for an hour or two. After that the random shutting down started nonstop. I restarted, clean the phone app cache, nothing worked. I found the solution: Just properly charge your phone! So I just turned my phone off and plugged to my Anker fast charger and let it plugged until it hit the 85% (I have that option on to extend the battery life) And this fixed the problem . Hope it helps! https://www.amazon.com/gp/product/B08M9M2V7X/ref=as_li_tl?ie=UTF8&camp=1789&creative=9325&creativeAS...
