* Power off phone
* Boot into Maintenance mode
* Scroll down to Clear Cache and select it
* Select to Reboot phone
Try changing ringtone
go to settings -> sound and vibration -> ringtone -> + on top right -> select music file
i tried with music file that has dashes and special characters( parenthesis, bracket, under score) and they all works
Just to clarify, your note 20 ringtone is the audio from the videos on the lock screen is that correct?
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