Tested on iPhone 6 and Galaxy S4, should work fine on other models and other brands (best for 16:9 ratio screens).
Download the image of your choice and set it as your lock screen/wallpaper.
- Hold your finger on the image you want as your wallpaper.
- Press Save Image.
- Go to your phones settings and set the image as your lock screen/background.
- Enjoy! If you have any questions or comments, please feel free to contact me.