When you want a new background for your Android device, you can download the Windows 7 wallpaper from the official site. This version is available for both Android and PC platforms. It has a 1920×1200 resolution and an internal number of WM-83599. You can also use GIFs as your wallpaper and save them as a PNG file to use them as your background. You can also add animated wallpapers to your Android device.