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A New Smartphone from Motorola Redefines Mobile Computing The 4G Atrix offers surprisingly powerful portable working experience.

By Jonathan Blum

Opinions expressed by Entrepreneur contributors are their own.

Is it a lap-phone? A cellbook? A webtop? Motorola's Atrix 4G smartphone defies classification.

The Atrix is an Android 2.2-powered smartphone that can be docked to a notebook-computer-like keyboard and screen called the Lapdock, which connects to all your virtual office assets online. The Atrix Lapdock, while nowhere near a legitimate notebook PC in terms of speed and performance, offers a surprisingly work-savvy mobile web experience.

The full-size keyboard is almost absurdly luxurious by mobile computing standards. Access speed online is reasonable, as long as you don't expect blazing broadband speeds (uploads, in particular, are slow). Best of all, the combined system is blissfully light--about three pounds for the phone, Lapdock and power cords. That's probably less than your empty luggage.