Nokia Lumia 920, Lumia 820: All you need to know

New Delhi: Finally, Nokia revealed its first smartphones - Lumia 920 and Lumia 820 - which run Microsoft's Windows Phone 8 OS, a big step for a company that has bet its future on an alliance with Microsoft. Here is everything that you need to know about both the Lumia 920 and the Lumia 820.

Nokia Lumia 920

Nokia's new flagship phone is the Lumia 920, which runs Windows Phone 8. The lenses on its camera shift to compensate for shaky hands, resulting in sharper images in low light and smoother video capture, Nokia said. It can also be charged without being plugged in; the user just places it on a wireless charging pod. Here are the key features of the Nokia Lumia 920:

- Display: 4.5-inch PureMotion HD+ WXGA (1280x768) IPS LCD, ClearBlack, super sensitive touch for nail and glove use

- OS: Windows Phone 8

- Memory: 1GB RAM, 32 GB mass memory

- Skydrive storage: 7GB

- Camera: PureView with Optical Image Stabilisation and Carl Zeiss optics 8.7 megapixel, short pulse high power LED flash

- Front camera: 1.2 Mpix f/2.4

- Video capture: Full HD 1080p @ 30fps

- Connectivity: NFC Wi-Fi 802.11 a/b/g/n, Wi-Fi hotspot, Bluetooth 3.1, A-GPS/GLONASS, micro-USB , 3.5 mm audio

- Processor: 1.5 GHz Dual Core Snapdragon S4

- Battery: integrated Qi wireless charging, 2000 mAh

- Colours: Yellow, Red, White, Grey, Black

Nokia Lumia 820

Nokia also unveiled a cheaper, mid-range phone, the Lumia 820. It doesn't have the special camera lenses, but it sports exchangeable backs so you can switch colours. Exchangeable shells not only make it possible to select from a range of colors, but also to add wireless charging. Beneath the shell is room to insert a micro SD memory card. Here are the key features of the Nokia Lumia 820:

- Display: 4.3-inch OLED WVGA 800x480, ClearBlack, super sensitive touch for nail and glove use

- OS: Windows Phone 8

- Memory: 1GB RAM, 8 GB mass memory, support for microSD cards up to 32GB

- Camera: 8Mp with Carl Zeiss optics and dual LED flash

- Front camera: VGA

- Video capture: Full HD 1080p @ 30fps

- Size: 123.8 x 68.5 mm x 9.9mm

- Weight: 160g

- Connectivity: NFC Wi-Fi 802.11 a/b/g/n, Wi-Fi hotspot, Bluetooth 3.1, A-GPS/GLONASS, micro-USB, 3.5 mm audio

- Processor: 1.5 GHz Dual Core Snapdragon S4

- Battery: 1650 mAh with support for Qi wireless charging

- Colours: Red, Yellow, Grey, Cyan, Purple, White & Black Technical Profile

At Wednesday's event, Nokia executive Kevin Shields demonstrated the wireless charging technology by placing the phone on top of a JBL music docking station, which charged it. Nokia is making its phone compatible with an emerging standard for wireless charging, called Qi. That means the phone can be charged by third-party devices.

Both phones are expected to start shipping in select markets later in the year. Nokia will announce pricing and specific roll-out dates country by country when sales are due to begin.

Nokia Corp. launched its first Windows phones late last year under the Lumia brand, as the first fruits of Elop's alliance with Microsoft. Those ran Windows Phone 7 software, which is effectively being orphaned in the new version. The older phones can't be upgraded, nor can they run applications written for Windows Phone 8.

Nokia sold 4 million Lumia phones in the second quarter, a far cry from the 26 million iPhones that Apple Inc. sold. So far, the line hasn't helped Nokia halt its sales decline: its global market share shrunk from the peak of 40 per cent in 2008 to 29 per cent in 2011, and it is expected to dwindle further this year.