Nokia (NOK 0.82%) has launched its Nokia Lumia 620 in the U.S. to target a lower-end segment of the smartphone market. Notably, the Nokia Lumia 620 is available on Aio Wireless, AT&T's (T 1.12%) new no-contract service. 

The Nokia Lumia 620 features:

  • "Dual-shot" technique to create a variety of colors and textures. By casting two layers of polycarbonate plastic, a single base layer and a second color within a transparent, translucent layer, the Lumia 620, for instance, combines yellow and cyan to produce new colors like lime green.
  • 3.8-inch display with enhancements to help users read in the sunlight.
  • 5-megapixel camera to shoot 720p HD video.
  • Built-in near-field communication to connect with speakers or headsets.
  • HERE Maps, Drive+ for turn-by-turn navigation, and HERE City Lens for public transit options.
  • Windows 8 software package-which includes Live Tiles, People Hub, Xbox Live, and Microsoft Office.

Nokia says the default color for Lumia 620 consumers will be cyan, but Aio customers can exchange their shell for violet, yellow, or green for free at Aio retail stores. This week's company post did not include a price for the Lumia 620 on Aio. A company announcement in December 2012 said the Nokia Lumia 620 would cost about $249.

The Lumia launch comes on the heels of news that Nokia will ship its Asha 501 next month. 

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