I am residing in asansol, west bengal and I can say vodefone is the best network I have used ever. Internet speed is the best. I am using 4g and I get 500-600kbps speed maximum time in it and the voice calling quality is also very good. Charges and bills are also normal or you can say cheap.
I have been using vodafone for 3 years and I am fully satisfied with it. Thank you.