Just because it says "UMTS" doesn't mean it works in North America. The E61 has UMTS but it runs on the European frequency spectrum, which is different from the US... so the "feature" is useless on this side of the pond.
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Uh. Yes they do.
Technology
WCDMA (UMTS) / GSM
Band
WCDMA (UMTS) / GSM 850/900/1800/1900
Just because it says "UMTS" doesn't mean it works in North America. The E61 has UMTS but it runs on the European frequency spectrum, which is different from the US... so the "feature" is useless on this side of the pond.