OPPO A57 4G
Android 12.0
1. Find "Library"
Slide your finger upwards on the screen.
Press YT Music.
Press Library.
2. Play audio file
Press the required category and go to the required audio file.
Press the required audio file.
3. Select volume
Press the upper or lower Volume key to select volume.
4. Go to the next or previous audio file
Press arrow right to go to the next audio file.
Press arrow left twice to go to the previous audio file.
5. Turn shuffle on or off
Press the shuffle icon to turn the function on or off.
6. Turn repeat on or off
Press the repeat icon to turn the function on or off.
You can choose whether you want the music player to repeat one or more audio files.
7. Add audio file to playlist
Press the menu icon.
Press Add to playlist.
Key in a name for the playlist and press Create a new playlist.
Press Create.
8. Return to the home screen
Press the Home key to return to the home screen.