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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 "dual-band"?

Dual-band refers to a device's ability to function on two different frequency bands. Many CDMA devices sold in North America are dual-band capable. Dual-band CDMA devices tend to offer better roaming inside of North America. Generally speaking, a dual-band GSM device sold in a non-North American market will not function in North America. Likewise, a North American dual-band GSM phone will not function in Europe and most other parts of the world. This is because North America uses two different GSM bands than do Europe and most of the rest of the world. GSM users that wish to travel internationally should look at a tri-band or quad-band device.

Also known as: "dualband"

See Also: CDMA, GSM, tri-band, quad-band

Referred to by: GSM

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