Airtel Network is the best. I am very happy with its network coverage. either you are in village or town, its network is awesome everywhere . wherever you go it follows you. If you are travelling by train only sometimes its network gets disconnected as compare to other networks. In metro city’s its 2G behave like 3G and just opposite happen in town. Few drawback I found by using Airtel is its expensive call rate.much high compare to other operator, after every 1-2 months its plan gets costlier. In terms of plans I am not satisfied with their cost, it should be little bit cheap .anyway.Network is best.but cost is high.