First check whether there is a problem with the shortcut key settings of the third-party player. You can choose other ways to adjust the volume:

1. In the music playback interface, when lyrics are not displayed, press and hold the screen. , slide up and down, and the color rises and falls to indicate the volume;

2. Music player interface-press the side volume down button to adjust;

3. Settings-General --Gestures--Bright screen gestures/System motions/System--Two-finger volume adjustment switch is turned on. After turning it on, you can adjust the volume with two fingers on any interface

Tips for playing music and videos:< /p>

When playing music on your phone, you can long-press the lyrics on the song playback interface and pull up or down, or drag the progress bar below to fast forward or rewind to adjust the progress of the music on your phone.

You can adjust the brightness in the left view area of ??the video viewing interface by sliding up and down on the touch screen, and adjust the sound volume in the right view area by sliding up and down on the touch screen.