My SD card on my Android phone has stopped working. The phone always displays an icon at the top of the screen which tells me that my "sd card is blank or has unsupported file systems." After I click on this icon the phone suggests that I reformat the card; upon doing this the phone restarts, but the card still does not work.
I have never actually saved anything to the SD card yet, only used internal memory. I haven't dropped my phone, messed with the SD card, or anything like that, so I see no reason it should stop working suddenly.
My Phone is a Droid Razr M, using Android Version 4.4.2.