I haven't been able to access it throught the phone. I have to take it out and put it into my computer. Then put the pics or music into the proper folders, then put it back into the phone and go through the folders I moved the data too. It's really a pain and I would think there would be an easier way but I haven't found it.
Check out a fun infographic that teaches you how to increase storage, enhance security, improve battery life and clean your device.