What you want to ask is why BYD’s QQ Music Bluetooth Car Mount does not have a cover? There is a problem with the car media player software and the music file itself.

1. Car media player software problems: There are some problems in the software of BYD QQ Music Bluetooth car player, which prevents the music cover from being displayed correctly. This is due to the software version being too old, or the software lacking necessary updates and fixes.

2. Problems with the music files themselves: Some music files do not have built-in cover images, or the format of the cover images does not meet the requirements of BYD QQ Music Bluetooth car player. This causes the player to not display the cover image correctly.