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It's All Geek To Me: David Explains GSM
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Tech expert David Pogue explains the meaning of GSM, or the Global System for Mobile Communication, that is used by T-Mobile and Cingular. Learn more about it with The Science Channel's "It's All... (more info)

Tech expert David Pogue explains the meaning of GSM, or the Global System for Mobile Communication, that is used by T-Mobile and Cingular. Learn more about it with The Science Channel's "It's All Geek To Me."

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