The following wallpapers were made for desktops. However, you can certainly use them for phones or tablets! I recommend downloading the highest resolution wallpaper and then crop it. When you set a new background on your device, you're prompted to position it and crop it. 
About the Game
Characters
Walkthroughs
Maps
Screenshots
Movie Clips
Music
Square's Art
Wallpapers
Game Saves
Downloads
Desktop Wallpapers 