O2's latest phone combines many of the features of a PDA with the latest in mobile phone technology including 3G support, push e-mail and video conferencing all in a conventional looking handset.
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The O2 is a solid player, offering impressive video and sound quality and support for a massive list of filetypes.
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With a faster processor, the Xda Zinc has a slight performance edge over the Dopod 838 Pro but falls short by a slight margin in terms of aesthetics. Unless you're looking for a QWERTY handheld, there are more options out there.
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O2's Xda Stealth looks a lot like a regular slider phone, until you flick it open and notice the Windows Mobile 5.0 operating system, push e-mail capabilities and built-in Wi-Fi support.
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It has Wi-Fi, a 2-megapixel camera and runs on Windows Mobile 5.0, yet shares the same dimensions as the Xda II Mini. Find out what the hype on the Xda Atom is all about.
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Eyeing off O2's PDA and smartphones but disappointed with the lack of 3G support? Its line-up for 2007 looks impressive, with Wi-Fi, 2-megapixel cameras and zippy processors on all models.
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