Another great invention from SanDisk, the microSD is about a quarter of the size of an SD card and is the newest standard of SD flash memory specifically designed for use with ultra-small mobile phones and other devices. Like the miniSD, the microSD/TransFlash is ideal for use in storing media-rich files such as music, videos, and photographs in compatible mobile phones. Comes with an SD Card adapter. Note: If your device is running a version of the BlackBerry Operating System older than version 4.2.1, the 4GB microSDHC card may not be recognized. Upgrading to BBOS v4.2.1 should permit the use of this card. | 
