This is the mobile wallpaper section of the Xenoblade galleries. As stated in the regular gallery, for the time being, rpg-o-mania focuses on the Xenoblade series and not the Xeno series as a whole that started with the Wii version and had some iterations on the 3DS, WiiU and Nintendo Switch since then.
These wallpapers were crafted to work on many mobile devices like iOS and Android, but you might need to try them out if they really fit the screen of your phone!