My pc is ubuntu 14.04. My iphone is ios9.
When I connect iphone with my pc via USB, I can copy any photo in my iphone (under directory DCIM) to my PC, then I'm able to open the photo on my PC.
However, when I copy a photo from the PC to the DCIM folder of my iphone, the photo is not show inside the icon "Photos" in iphone. That is, I cannot access the copied photo on my iphone. Any ideas?