Nokia lumia 630 from brand of nokia. When it was launched its price was around 11k. Now its go down, its popularity still go down due to some resons.
Nokia lumia its a very good features but due to some important features that is lack on this phone. Its a have very good camera that is 5 mp but its have lack of flash. In todays life flash in a smartphone is very important and if any smartphone have a very good camera but there have no flash then people would not like to purchase it.
And its also have not front camera in selfie time if there have no front camers then no one want to buy such phone. And now in its phone updates now windows 10 is going on but in most phone of this modal that I have seen its cannot get windows 10. So microsoft should improved in such things and make lumia phones more popular.