A wallpaper or background (also known as a desktop wallpaper, desktop background, desktop picture or desktop image on computers) is a digital image (photo, drawing etc. ) used as a decorative background of a graphical user interface on the screen of a computer, smartphone or other electronic devices. On a computer, wallpapers are generally used on the desktop, while on a mobile phone they serve as the background for the home screen. Though most devices come with a default background image, modern devices usually allow users to manually change the background image.
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