When I plug my S3 into my PC's USB port, Windows Explorer shows that the card as only 3.52 GB free out of 14.9. I figured I'd navigate through its file system to see where I could free up some space. (This was after I'd already copied all my photos over to my PC and deleted them from the phone.) But when I navigate down one level into the card, select all folders and files, right-click and request Properties, it tells me that I have 211 folders and only 6 files, for a total of 177 KB. (I had just moved all my photos to my PC and erased them from the card, which freed up a couple gig.) Where is 11+ GB of data hiding on my card, if not in the file system?