It was the Windows Phone 8 day on 5th September as Microsoft along with Nokia announced the Windows Phone 8 and Nokia finally revealed their new range of Lumia devices,namely Lumia 820 and Lumia 920.

Lumia 820
While the Nokia Lumia 820 will be sporting a 4.3 ” Clear Black Display with WVGA resolution(800×480),big brother Lumia 920 will feature a bigger and better 4.5″ Nokia PureMotion HD+ display with (768×1280)WXGA IPS LCD display.

Lumia 920
Here are the detailed specifications of both the devices:
| Nokia Lumia 920 | Nokia Lumia 820 | |
| Display | 4.5 inch Nokia PureMotion HD+ WXGA IPS LCD Super Sensitive touch Nokia ClearBlack with high brightness mode and Sunlight Readability Enhancements |
4.3 inch ClearBlack OLED WVGA 800×480 Super Sensitive touch Nokia ClearBlack with high brightness mode and Sunlight Readability Enhancements |
| Battery | 2000mAh with integrated Qi wireless charging | 1650mAh with support for Qi wireless charging |
| Processor | 1.5GHz Dual Core Snapdragon S4 | 1.5GHz Dual Core Snapdragon S4 |
| Main camera | 8.7MP with Nokia PureView advanced optical imaging stabilization and Carl Zeiss optics Full 1080p HD video capture at 30fps |
8MP Auto Focus with Carl Zeiss optics Dual LED flash Full HD 1080p video capture at 30fps |
| Front facing camera | 1.2MP with 720p HD video | VGA |
| Memory | 1GB RAM 32GB mass memory with 7GB free SkyDrive storage |
1GB RAM 8GB mass memory with microSD memory card support and 7GB free SkyDrive storage |
So the Lumia 920 seems like a high end offering with Pureview features with image stabilization,integrated Qi wireless charging and other high end features ,while on the other hand Lumia 820 will be a mid range affair with smaller display and reduced mass memory and microSD support.
Source and Image Credits:[Nokia Press Release]