Iphone deletion information has been saved. How to delete it completely?

Methods: 1. Find the setting options on the iPhone page and click Open. 2. Enter the settings page, find the general bar, and click Open. 3. In the General page that opens, page down to find the Usage column, and then click Open 4. Enter the usage page and open the management storage space at the bottom of the page. 5. On the storage space page, you can see all the installed applications and find the application you want to delete. Click Open 6. Enter the detailed introduction page of the application, and click the Delete Application button below. 7. A prompt window will pop up at the bottom of the page, whether to delete the application. If it is deleted, its data will be deleted together. If you are sure, click Delete Application.