Nokia announces the new New Nokia Lumia 920 and Lumia 820 Windows Phone 8 Devices0By Karthikeyan Anbarasan (Karthik)on September 5th, 2012 at 6:23 PM Nokia on Wednesday showcased two new Lumia smartphones powered by Windows Phone 8, called the Nokia Lumia 920 and Lumia 820, at a conference in New York, which was broadcast…