I have been having issues with my Galaxy Note20 Ultra 5G. They have started last Monday after i have installed the latest Android update. Something interferes with the speaker volume. It randomly goes up and down or sound disappears completely. That affects ANY kind of sound - making a call, watching a video, listening to audio and even phone ringtones and system sounds. Also bluetooth headphones have a poor sound quality. The problem temporarily disappears after a phone restart or simply turning the bluetooth off and on. And then it reappears again. Very annoying. Also my Galaxy Watch5 runs out of battery twice as fast now despite installing an update for it, too. Probably because of the bluetooth issues, I suppose..
No I didn't get any response yet... will try to contact Customer Service. I know for sure now that the phone misbehaves when it is connected to the watch. No issues while the watch is off....
That's exactly what happened to my Note 20 5G. First, the upgrade to android 13 and one UI 5.0. After rebooting, a new update popped up. Exactly the same issues with WhatsApp, and sometimes the always display wouldn't work too.
About two weeks after, a new update popped up, but nothing changed.
The only thing that helped, was booting in recovery mode and cleaned the system cache of the phone, then the issues stopped happening.