The free app, "Windmill Live Wallpaper", provides an easy way to make your phone unique. It has the ability to display a live wallpaper, which can be set to your home screen, lock screen, or both. The wallpaper can be changed to an image of your choice, and you can even choose the speed of the windmill in the background.

If you want to change the look of your phone, you can also choose a different background. It can be set to the home screen, lock screen, or both. You can change the speed of the windmill, and you can set the day and the night wallpaper display according to the time.