Nokia and Microsoft joined hands 18 months ago. Nokia’s windows phones are branded as Lumia. Nokia 800, 710 are the first Nokia Lumia smartphones. Later Nokia introduced Nokia Lumia 900 and 610. Today Nokia and Microsoft unveiled two new Nokia Lumia Phones. Nokia Lumia 920 and Nokia Lumia 820 are unveiled today by Nokia with amazing features, Pureview camera technology and comes with Windows Phones 8 out of the box. Nokia Lumia’s are official first smartphones to hit the market with Windows Phone 8 operating system.
Nokia Lumia 920 Vs Nokia Lumia 820 Comparison
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I hope the above  comparison table helped you. Do share your views !