4k HD Wallpapers and Backgrounds app is a free android app that has a large collection of Full HD, Background Images for your Android

Features:
simple & user-friendly interface offers following features...
Recent Wallpapers
Trending Wallpapers
Featured Wallpapers
Random Wallpapers
GIF Wallpapers
Live Wallpapers
Categories with sort options
Download high quality wallpapers for free
set wallpaper as a background

You can set the wallpaper on your phone screen on android or tablet. You can also set beautiful wallpapers on the lock screen or on both screens at once.