How to change the Wallpaper on your nexus 5
1, Log www.nexus5wallpapers.com download nexus 5 wallpapers. (Tip: Nexus 5 wallpapers are 1080x1920.)
2, Press and hold an empty spot on any home screen then tap Wallpapers.
3, Select a wallpaper from the thumbnails at the bottom or tap Pick image to choose one from your gallery. When you've chosen a wallpaper, tap SET WALLPAPER at the top of the screen.