1. Clear data: open the main interface of the mobile phone, select the "Settings" function, select the "General" option, select the "iphone storage space" option, select unwanted junk files or applications in the interface, and select the "Delete" option after entering the application interface.
2. Erase content settings: open the main interface of the mobile phone, click to open the Settings menu, select the General option in the opened interface, click the Restore menu in the General interface, select the Erase all content settings option, click Erase Now to complete the security verification of the lock screen password, and click Erase iPhone.
Apple's mobile phone wants to uninstall the app, and there are no files left. When deleting an application, click and select the Delete Application option. There are two options to delete Apple mobile phone software. Usually, the uninstallation will keep the previous usage data of the software, and there are uninstallation residues. Only the Delete Application option can be completely cleaned.
(The above situations and methods are applicable to most mobile phone models of Apple. )