4K wallpaper - Backgrounds is an excellent app that offers a vast collection of high-quality wallpapers and backgrounds for your mobile device. With its user-friendly interface, the app allows you to browse through a variety of categories and genres, including aesthetic, abstract, nature, animals, space, and many more. One of the significant benefits of the app is that it provides wallpapers in various resolutions, such as Full HD, 2K, 4K, and 8K, ensuring that there is something for everyone.