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AT&T - GSM 900 and 1800? - Cell Phone Forums

Hi, I heard that most of the US runs on GSM 800/850 and GSM 1900...but I just called AT&T/Cingular and asked what frequencies they run on. The sales rep said they're on GSM 900 and 1800. Which is true? I was really intent on buying the Sony Ericsson K800i...

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