Mass Storage mode - definition


A standard mode allowing compatible phones to be connected to a computer's USB port and be used as a removable storage drive without the need for any special drivers.

Usually, in Mass Storage mode, the phone's memory is mounted as a removable drive by the computer OS and cannot be used by the phone itself. That's the reason why some phones only allow an inserted memory card to be mounted in Mass Storage mode thus keeping their system partition inaccessible on the computer in this mode.