Sequential playback, random playback, single loop, full loop. If you want to play the songs in the mobile phone music player in a loop, the application-Music Player-Click All-Click a song to play it. At the bottom of the music playing page, click the symbol with the loop arrow, the letter A indicates list loop, and the number 1 indicates single loop. On the lower left of the music playing page, an icon similar to two arrows interlaced together is a shuffle icon.