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Our online glossary is here to help you make sense of the terminology used in the cell phone industry. It covers mobile technologies, such as 3G and 4G, and even includes a bit of information on smartphone operating systems and the companies that make the cell phones and other mobile technology devices we all use.

What is "microSD"?

Smaller than miniSD cards, and also based on the SD card format, microSD memory cards measure roughly 15mm x 11mm in size - about the size of a little finger fingernail. This makes them ideal for use in mobile phones. The microSD format was originally developed and sold by SanDisk as the TransFlash format before being adopted in a slightly modified form by the Secure Digital Card Association. A newer microSDHC format has been developed to allow for cards of up to 32GB in size.

Also known as: "TransFlash"

See Also: miniSD, SD, microSDHC

Referred to by: Memory Stick Micro, microSDHC, RS-MMC

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