I bought a 64GB SD card for my Galaxy S3, and it worked perfectly. Today I turned on device encryption (worked fine) then I turned on SD card encryption. Since then I am stuck with the phone reporting that the SD card is blank or has an unsupported file system. Android gives me the option to format. The screen displays it is erasing, but then nothing happens.
I have tried removing the SD card and turning the phone on and off again. I have manually formatted the card using Windows 7 (ExFAT file system). I am able to read and write files to the card on the computer but the phone refuses to acknowledge a mountable SD Card.
I have also tried turning off the SD card encryption.
Any ideas on a fix?