2. Enter the main interface of settings, and click General.

3. Enter the general main interface and click on the iPhone storage space.

4. Enter the main interface of storage space, and the memory space will pop up behind all applications, and click the application that occupies a large space. The example is QQ.

5. Enter the main interface of application introduction and click Delete Application.

6. A prompt pops up on the page. Click Delete Application in the prompt box to delete the application and its reserved data and clean up the storage space it occupies. After deleting an application, you can reinstall it.