Iphone Wallpaper Cool Backgrounds Avengers : All of the avengers wallpapers bellow have a minimum hd resolution (or 1920x1080 for the tech guys) and are easily downloadable by clicking the image and avengers wallpapers for 4k, 1080p hd and 720p hd resolutions and are best suited for desktops, android phones, tablets, ps4 wallpapers.