2. Then, in Settings, we find and click General to enter General Settings.

3. You can roughly see the storage space and icloud usage, and click to enter.

4. Then, we can see an option to manage the storage space. Click this option.

5. Then you can see the current remaining memory and large files or software, just like the first system update software.

6. Delete software or files or update files, which can release a lot of memory.