Open the app’s settings or profile menu
Look for an option labeled App Icon, Theme, Appearance, or Customize
Select the icon style you want from the available options
Save or apply the changes
If the app does not support icon changes, use your device’s launcher or shortcuts app
On iPhone, use the Shortcuts app to create a custom app icon
On Android, use a third-party launcher or icon pack app
Download or create the icon image in the correct size and format
Replace the default icon with the custom image
Confirm the changes on your home screen
Restart the launcher or device if the icon does not update immediately