Till date no resolution from samsung....they keep on asking to sent log files....same issue had happened to my S series phone too....stay away from their updates...

After the recent update RAM management is so worst...no games or heavy applications installed..still only 1.1 go available as shown

Now it's not possible to update My files....it's showing error like this

Registered and error report sent along with log files....""After the latest android11 and ui 3.0 update , my m21 volume is very low... ram management after update is poor..hardly 1.3gb ram is available without any heavy games.. hard reset done ..no u...

It's not speaker problem