If you want to duplicate photos in Lightroom Mobile, there are a few different ways to go about it. The easiest way is to use the Copy Photos command in the Library module. This will copy all of the photos in the selected folder and put them into a new folder on your device. If you just want to duplicate a single photo, you can use the Copy Photo command in the same location. This will copy just that photo and put it into a new folder on your device. ..