You can customize each application icon with images from your Gallery.
Touch and hold an application icon until it’s unlocked from
its current position. Then drop it on the screen. The editing icon will appear in the upper
right corner of the application.
Tap the application icon (while the editing icon is still displayed).
Icon Gallery
Add new icon
Delete icon
Choose your icon image.
Tap an icon image from your Icon gallery, then tap OK.
OR
Tap the Add New icon to create a custom icon image.
When you create an icon image, follow the prompts to customize its
size and crop its image. Created icons are displayed in your Icon
gallery.
You can delete a custom icon image from your Icon gallery by tapping the Delete icon (at the top right corner of the Icon change screen). If you delete an icon image that’s currently designated for an application icon, it reverts to its default image.