This was recorded using my note10 when it updated to android 11.
Took me a long time to find out how to wipe cache partition, I like to wipe it after every update.
Just received my S21 ultra and its the same process....You need wired head phones to do it...which is odd seeing as the S21 series don't actually come with head phones. Have tried with charger cable but it doesn't work.
Do you no longer have your note 10 headphones? If not and you have a set of head phones with a jack. I wonder if the USB c to 3.5mm jack adaptor would do. As long as the adaptor has a dac built in it should support the phone. Or try and get a set of USB c headphones.