I am using airtel mobile operator for long time but I am not satisfied with its network coverage nowadays.It is sad that I am not getting network coverage for surfing internet even at my home.I complained to customer care for restoring network at my home but of no use.There is no network coverage even when I roamed to my village.Cusomer support is pathetic.I would not recommend anyone to buy airtel sim due to my bad experience of it network.Do not believe in its advertisement that says good network coverage because of my bad experience of using it network throughout the entire country.