Set Wallpaper - DROID RAZR M by MOTOROLA / LUGE by Motorola
From a home screen, select Apps (located at the bottom).
From the Apps tab, select Settings.
From the Device section, select Display.
Select one of the following:
Select the preferred wallpaper image then select Set wallpaper (located at the bottom). If selecting an image from the Gallery or Photos, select the photo and adjust the crop area as preferred then select OK (for Gallery) or Set Wallpaper (for Photos).