I used the Partriot memory card with my Samsung Galaxy S2. Since last week, the complete memory card is no longer usable. Photos of the family, documents, movies, all gone. On the PC, you will not even recognize the card. I am very angry, especially because I thought this would be very reliable. The greatest insolence I still find that the seller MediaProfi24 eK now precludes returning. Then prefer to order directly from Amazon directly.