I heard that coz my 32gb card is formatted as FAT32 , that any movies that are more than 4gb wont play , and has been the case as in the first 2 or 3 movies I put on my card as mp4 played fine , but when I was playing like the 4th and 5th , it was saying cannot play this file , yet if I formatted it again and put in the ones that wouldn't play alone on the card they play fine , I read somewhere that 64gb cards come as standard as being formatted with exfat , I even tried formatting my card on pc as exfat and when I put it into my phone it was saying it was damaged and it had to format it and it was back to FAT32 , and be nice the phone I am using is the kingsing android K5 .