1. The function of the cleaning software is not perfect, which damages the playback software or system files.

2. The system has been used for a long time and is unstable.

Solution:

1. Clear player data: Open settings, select programs, select players, and select clear data.

2. Uninstall and reinstall the software: attack the mobile assistant and mobile housekeeper in the mobile phone, open the software management, uninstall, and then search for installation.

3. Use other compatible and powerful playback software. For example, Baidu video, QQ video and so on.

4. If the above methods can't be solved, the system is damaged. Back up data and restore factory settings.