Wallpapers & Backgrounds HD, 4K

“Wallpapers & Backgrounds HD, 4K” is a cool app that provides a collection of high quality HD, 4K wallpapers and backgrounds to Android phones or tablets.  
Images are categorized by subjects (such as Nature, Galaxy, City, ...) to help you find wallpapers easier. This app also features wallpapers that are viewed more or rated highly. Beside, it also caches images to accelerate the viewing of the images, but you can clear the cache on the Setting section if you want to save storage for your devices.
Images in this app are suitable for personal purposes. You can set them as wallpapers for your devices, or save them as photos to use later. If you like a wallpaper, you can rate it 5 stars to help it become more visible for other users. You can also use Like feature to have it stored in the Favorite section to access them later. 
Disclaimer:
All the wallpapers in this app are under common creative license and the credit goes to their respective owners. These images are not endorsed by any of the prospective owners, and the images are used simply for aesthetic purposes. No copyright infringement is intended, and any request to remove one of the images/logos/names will be honored.