Hands-on with Nokia's first Windows Phones [slideshow]

Nokia World's low-key United States branch event was held on Wednesday morning in a hotel overlooking downtown Manhattan, and the main attractions were the Lumia 800 and Lumia 710, Nokia's first devices powered by Windows Phone, which were announced earlier in the morning in London.

The Lumia 800 will be Nokia's premium smartphone for the U.S. market, and the 710 will be the "mainstream" device. Though the two are very similar in terms of internal specs (they differ only in storage capacity and camera quality,) the main difference between the two is in their bodies.

The 800 has a solid one-piece body, so it feels as solid as an iPhone, but the battery is locked down inside. The 710 has interchangeable back panels, so the outward appearance and battery can both be changed. This naturally gives the 710 a lighter, less sturdy feel than the 800, but it is by no means flimsy.

Nokia representatives told us today that carriers, prices, and availability for these devices won't be announced until early 2012.

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