1. First, open the main interface of the mobile phone and select the "Settings" option, as shown below. ?

2. After entering the setting interface, select the "General" option, as shown in the following figure. ?

3. After entering the common interface, select the "storage space and icloud usage" option, as shown in the following figure.

4. After opening the storage space and using icloud, select and click the "Manage Storage Space" option, as shown in the following figure. ?

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

6. Finally, click the "Delete Update" option to release a lot of memory.