1. Delete unnecessary data such as cache, residue, advertisement file through intelligent manager/memory manager; End the background application; Close programs that don't need to be started by themselves. (If the machine does not have a memory manager, it is recommended to update the machine to the latest version and try again. )

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.

3. Uninstall uncommon software or files.

4. If you are still prompted that the memory is insufficient, it is recommended to back up the data in the mobile phone and try to restore the factory settings of the machine.