Android phones use the SD card in a more computer-like way than a camera-like way, so random rw is important. There's actually an "app" rating introduced in the

Android phones use the SD card in a more computer-like way than a camera-like way, so random rw is important. There's actually an "app" rating introduced in the last year or two, but I think most manufacturers haven't bothered to get their cards certified yet. But some Sandisk cards now have an "A1" or "A2" marking on them, which represents application performance.