1. It is recommended to uninstall some unused applications.
2. If your device supports microSD card storage expansion, it is recommended to use microSD card (high-speed microSD card of common brand is recommended) to move personal files in the mobile phone to microSD card for storage.
3. It is recommended to use mobile phone housekeeper cclean. Click phone manager > accelerate cleaning. After scanning, click one button to clean up, or select the content to clean up according to actual needs.
4. After using WeChat, QQ and other applications, the storage space is insufficient, which may produce a large number of cached data (pictures, videos, etc.). );
It is recommended that you selectively clean up the application storage space of WeChat and QQ.
Cleaning scheme:
For example, on WeChat, go to WeChat Me > Settings > General > Clean up WeChat storage space for selective cleaning;
For example, QQ, enter QQ, slide the screen to the right, and click Settings > Space Cleaning to selectively clean up.
5. If the memory is still insufficient after trying the above methods, it is recommended to restore the factory settings of the mobile phone after backing up important data (checking "Format internal storage space" can clean it up more thoroughly, but please back up important data to external storage such as computer, SD card or cloud first).