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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 "aptX"?

aptX is an audio codec used to allow a Bluetooth A2DP audio connection between one device and another. For example, a smartphone equipped with aptX can stream audio in real time to an accessory Bluetooth speaker equipped with the same codec. Both devices must be equipped with aptX for the codec to work.

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