You can use the music player to play audio files you have transferred to your phone.
Press All songs.
Press the required category and go to the required audio file.
Press the required audio file.
Press the upper or lower part of the Volume key to adjust the volume.
Press the song title at the bottom of the screen.
Press arrow right to go to the next audio file.
Press arrow left twice to go to the previous audio file.
Press the playback mode icon to select the required setting.
Press the menu icon.
Press Add to playlist.
Press Create new playlist.
Key in a name for the playlist and press OK.
Slide your finger upwards starting from the bottom of the screen to return to the home screen.