The memory card failed its essential function, namely the reliable storing and providing to an end device. The WiFi feature also does not work after installing the associated app quite good, but really smart. While exactly the images you want to select for transmission at Samsung in advance, the card ensures quasi EyeFi for a live stream. Problem: The connection is unstable and breaks every now and then, so high potential for frustration. Worse still, the card is under Windows (tested with WIN 8.1, WIN XP) just not recognized, no matter what you tried. Thus, the classic exchange of data with an SD slot or card reader is not possible. In Windows 7 it is found, however, as a blank card with no photos. Disaster!