Most of my reviews are positive.  This product failed (could not read on my device (a Galaxy S3) nor on my computer with 2 different readers) in less than 30 days.  The customer support is also unhelpful, as they would only replace the card after many questions, they would not provide a refund (I did not want a replacement of a card that failed so quickly).I would suggest buying a different card, it is not worth the hassle and lost data to save a couple of dollars with buying this one.