Dustin D
I use this in my Samsung Galaxy SIII and it has been great. There have been a few instances when the card was not recognized, but simply rebooting the phone fixed the problem. I am unsure whether this is a Samsung issue (probably), or a SanDisk issue, but it has only happened 2 to 3 times over the course of a year and a half. Overall, the write speeds are fast enough that you can record 1080p video directly to the card, which is exactly what I wanted it for. It does come with a full-size SD card enclosure, allowing you to use this in devices that require that type of memory card. Recommended!