Airtel is the best cellalur network of world.All other network disconnected in small and and hilly areas but airtel is the one that always connected with full network. Previously I had idea network but I had to face many problem regarding net and all idea dont have proper 3g support and start launching 4g than I swtich to airtel and all my problem get solved. Airtel provide best connectivity and internet speed at low tariffs. Airtel provides many useful offers for its customer. The customer care service is also good. Still I m using airtel and having great experience with airtel.