Insufficient remaining memory of the mobile phone means that the storage space of the mobile phone is not enough, and some uncommon applications can be uninstalled to release the memory space. If you don't want to uninstall the application, you can empty the cache of some applications, and the cached data of the application will also occupy the memory space of the mobile phone.

Taking the iPhone 7 mobile phone as an example, the operation of clearing the application cache is as follows:

1. Open the application that needs to clear the cached data.

2. Click Settings for the application.

3. Click Clear Cache. After successfully clearing the cache, the storage space occupied by the cached data will be released.