I bought this for my Android phone and it kept stating "media scanning" over and over, even when the device was on or not even restarted. I thought it was the phone and was so annoyed. Then did a search and found that several others got a duds from this same batch off amazon. So not only did I pay for this, now I have a useless 32gb card that refuses to hold music on my phone, or anywhere else. I loaded a 4gb card in the same device and it only scans media when restarted and does not lag at all. The phone can hold up to 32 gb too. If you don't believe me, go onto the Sandisk message boards and look. It's a dud. So disappointing.