Last night I had to backup 2760 photos and videos, about 6.3G worth, from my Nexus 4 Android phone to my Linux laptop. The Nexus 4, like many other Android phones, only supports the Media Transfer Protocol, or MTP, for transferring files via USB connection. With Ubuntu 14.04, this is a fortunately a plug and play situation: Connect the phone via USB cable, and start dragging and dropping files to and fro using the built-in file manager on the Linux side.