4K Wallpapers (4K Backgrounds) is a free to use app which has a large collection of Wallpapers 4K (UHD | Ultra HD) as well as Wallpapers Full HD (High Definition) wallpapers | Home Screen Backgrounds. We upload new stunning 4K | HD wallpapers 1080p as well as 2160p every week! You'll dive into splendid of great Wallpapers HD.