BSNL -Bharath Sanchar Nigam Limited one of the oldest mobile operators which ran well when it came but as time passed and competition pincreased there has been a drastic change not only in its service providers but also in its network connectivity and internet connectivity, as time passed by it got spoilt even after which I personally would list it down second in the worst mobile operators followed by its service providers as well. very soon if some more time given to this mobile operator it would not have network to provide to the users that is it would disappear like mohen ja daro ????. choose wisely.