Main fields of application with me: Saving images of an SLR - it works on the SanDisk app in principle quite well so far, the import is running quite quickly. However, I have no way the app found to sort the photos into different folders. This I do with a second app, FTP manager. For me, the use of 2 apps no problem, but is a matter of taste Moreover, I have some videos / films copies (not iTunes purchases!) On the drive, which also runs look liquid, only in format .mov hooked the video. Overall, I am satisfied with the drive, only when the app could be improved, here a second app is necessary for my purpose! Exchanging files between iOS and Android work with the drive as well. I have set WPA encryption, and so far had no crashes with imports up to 3 GB.