This is because a large number of caches have not been cleaned. The mobile phone has been used for a long time. Many mobile phones clearly have space when installing programs, but they still show that the system memory is insufficient, and the mobile phone prompts that the memory is full or insufficient or needs optimization.

Extended data:

The solution to the shortage of mobile phone memory;

1. Delete unnecessary data and applications, close unnecessary applications and optimize mobile phone space.

2. If the mobile phone supports the memory card, move the multimedia file to the expansion card or set the shooting storage path as the expansion card. If there is no memory card, it is recommended to move multimedia files to the computer regularly.

3. Uninstalling uncommon software or files can release the memory of the mobile phone.

4. If the memory of the mobile phone is still insufficient after the above operation, it is recommended to back up data (contacts, information, photos, etc. ) and try to restore the factory settings.