1. Click the recent app button in the lower left corner of the phone-click the "X" in the upper right corner of the app to close (to close all, click Close All at the bottom of the screen).

2. Standby desktop-application-intelligent manager-memory-can end the running program/stop the automatic operation of the application.

3. Clean up the cached data: standby desktop-application-intelligent manager-storage space-delete unnecessary data.

4. It is recommended to transmit multimedia files (pictures/music/videos, etc.). ) to computers and other devices.

5. Uninstall some unused applications.

6. If it is invalid, it is recommended to back up the materials (contacts, materials, photos, etc. ) and try to restore the factory settings;