The Nokia Lumia 800 is Nokia's first attempt at releasing a Windows based smartphone. It runs Windows Phone 7.5 as its operating system. It shares the exterior design with the Nokia N9. It can be upgraded to Windows Phone 7.8, but will not see an upgrade to Windows Phone 8. The Nokia Lumia 800 has a curved 3.7" AMOLED screen with Gorilla Glass covering the display.
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