Nokia Lumia 920 :
As one of the first Windows Phone 8 devices to be officially announced, this device augments Espoo's line with a larger, curved 4.5-inch PureMotion HD+ display, dual-core 1.5GHz Snapdragon S4 CPU, 2,000mAh battery, NFC, integrated wireless charging and an 8-megapixel rear PureView camera capable of 1080p video. The display packs WXGA (1,280 x 768) resolution, is 25 percent brighter than the next best panel on the market and it's the fastest LCD that Nokia has ever shipped on a smartphone. What's more, the screen also boasts what Nokia calls "Super Sensitive Touch," which promises to let you use it even when wearing gloves or mitts.
Nokia Lumia 820 :
No matter your budget, Nokia's got a Windows Phone 8 handset for you. While the Lumia 920 dominated today's press conference, the company's more modest Lumia 820 is planning to sneak in and capture the mid-range. The handset is packing the same 1.5Ghz dual-core Snapdragon S4 internals you'll find in the 920, along with 1GB RAM and a 4.3-inch display.
While the handset isn't unattractive, the design language of the 800 (and N9) that captured our hearts has been dumped in favor of something more symmetrical. The glass of its 800 x 480 ClearBlack OLED screen is flat rather than convex (poached by the 920) and the body's finish is a little more shinier than the previous generation of Nokia's polycarbonate.
Photography fans looking to get their hands on that PureView goodness will be disappointed to see that it's also been reserved for the flagship (in some form). Instead, this unit comes with the more familiar 8-megapixel Carl Zeiss optics we've seen before, but at least there's a front-facing VGA lens for video conferencing.