A cell Phone color Wallpaper is similar to a Wallpaper on your PC in that it displays a Picture on the background of your screen. A lot of cell phones are able to download Wallpapers to display onto the background of their screen in either colour or black and white (monochrome). The colour Mobile Phone Wallpaper has taken over from the Operator Logo as the best way to customise your Mobile Phone with a background picture of your choice.