Ios Change App Icons. Tap the dots near the bottom of your screen. After this, select '+ Add Action' to continue.
Tap on Shortcuts to open the Shortcuts app. Tap on the "+" icon in the upper-right corner. Tap the icon to open Shortcuts.
Tap Add Action, then use the text field to search for Open App.
Launch the Shortcuts app on your iPhone or iPad, then tap the + icon in the top-right corner of the screen.
Your new app icon is ready. After adjusting the photo thumbnail, tap on 'Choose'. Select the photo you want to use as the new icon.