As I said the signals of airtel network is too good but for that they charge more than the worth.
I have taken it 6 months back and used it for 3 months and disconnected due to less amount of data and high cost. I have gone with a plan of 35 GB and it served me only for 10 days. The service is to bad and they react after 2 or 3 days.
If you are a user of more data then my advice is go for a local broadband which is too good now-a-days.