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On World Tech Update this week HP introduces the Touchpad tablet and Veer and Pre3 smartphones, the iPhone 4 goes on sale at Verizon, Sprint launches the dual screen Echo smartphone, Sony Ericsson advertises its first Android based PlayStation phone, the EU announces a common mobile phone charger, we test out a rugged gadget and NHK gives a look at TV of the future. Find out what's coming up on each week's show by following us on Twitter (WorldTechUpdate) or check out our Facebook fan page at www.facebook.com/worldtechupdate

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