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Cellular wideband audio is a type of audio technology that is used in telephonic communication on supported devices and carriers. This technology provides higher quality voice communication by extending the frequency range of audio signals transmitted over telephone lines. It was initially launched for wired telephone networks but now also supports wireless/mobile networks.
Cellular wideband audio is also the name given to a similar HD voice feature available on iPhone 5.
Cellular wideband audio is also known as HD voice and wideband audio.