When I first got my sd card, it worked perfectly fine. Then i realized that i wasn't able to move anything to my sd card not and delete anything from it. My sd card has been like this for around a year. If i try to use the File Manager app on my phone, it says "Canceled." Also, if I try to create a folder on my sd card, it says "Cannot create folder." In settings, i cannot seem to find a button that allows me to move apps to my sd card. In my Gallery, when i try to move files of pictures to a file on my sd card, it says "Cannot move this file." If i try to make a new file on my sd card through my gallery, it says "Invalid name." Since i am basically out of internal storage, and i have an sd card that is mostly empty, it would be very beneficial to be able to move apps and pictures to my sd card. Please help!!!!!!