Lets check out some specification for Lumia 920 and Lumia 820 : Nokia Lumia 920:
Nokia Lumia 820
Comparision between Lumia 920 and Lumia 820: The Nokia has announced that Lumia 620 will arrives in February and will become available in black, white, yellow, magenta and cyan . For now the Nokia Lumia handsets has commanded inmost of the metro citie markets in India where the Nokia Lumia 920 will have a price tag of INR 38199, whilst the Nokia Lumia 820 will command a price tag of roughly INR 27559. The price tag for the Nokia Lumia 620 is currently unknown but will be announced when the handset goes up for sale.