I used airtel for 7 years and no problem had occurred during that period but now I am using bsnl phone coz bsnl to bsnl is free. if this scheme will available in airtel I will buy that. only airtel network works everyshere whether it is basement or somewhere inside or deep the room.
I used mostly all connection but airtel is good. and everywhere. and satisfied with airtel. I should suggest people to take airtel connection. airtel provides all facility but it is little bit expensive as compare to others