Desktop Presets are designed to work on RAW and JPEG files from your digital camera. They are in a .xmp file format and can only be used with Lightroom Classic CC or Lightroom Classic on your Mac or PC computer. Please note that the .xmp files will not work on mobile. Mobile Presets are designed to work on JPEG photos taken on your phone (iPhone and Android). These files are in a .dng file which can only be used with the FREE Lightroom app that you can download directly to your phone. Please note that the .dng files will not work on your desktop.