James Rosewell writes:
Last week I decided to use my own hard earned money to buy the latest high-end HTC smartphone running Android 2.1 in the form of the Google Nexus One. I’ve not used an Android-based device as my main phone for some time so was keen to understand the improvements to the operating system and see for myself how fast the Snapdragon processor really is.
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Last week's International CES in Las Vegas saw the appearance of the RCA Airnegy, a dongle-sized device that claimed to recharge mobile phones by using WiFi signals. The company said they'd demonstrated Airnegy taking around 90 minutes to charge a BlackBerry Bold from one-third battery capacity to full. RCA says the 'WiFi hotspot power harvester' device will go on sale later this year for $40 (around £25), with plans to incorporate the entire technology in a battery next year.
However initial enthusiasm for the device has turned to scepticism, with a number of online commentators pointing out the difficulty of generating enough power by harvesting 2.4GHz WiFi signals. One suggested that battery charging would take years, not hours.
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