I have had the 32gb in my Galaxy S3 for almost three months and there were no issues. However, the phone just recently started telling me the card has unrecognized files or it is empty, causing the loss of my media. I chose to format it after seeing the error for too long, chalking it up to some random error. Somehow, yesterday, all of the files on my card magically reappeared and I was able to play my music again, despite having had the phone format the card. Shortly afterwards, the error reappeared. I put the card in my computer and it is simply not appearing. Shame, but I think this is a risky card to purchase.