I am anup giri. Airtel is the best network than any other network in our locality. But some times we faces some trouble, it may be due to lack of electric suply. Its 3g network is batter but 4 g network speed very slow.in voice calls sometimes we seem that did not get any output. It is not easy to get a chance to speak to the customer care. Offer is same as well as any other network. If we get six months as well as one our two months validity then it will be batter to us. I am use the 6 months of airtel sim.