I am using airtel sim and have very bad experience with its network and services. Im using it regularly but I dont recharge my airtel prepaid because they cut the balance many times and said that you have activated the hello tune service and other. When I call them they receive calls only two times a day and Im not satisfied with them. The network not shown in rural areas. They gives good network only in cities. The data balance always gets low, when I call call them with this query they tell me that is because you activate the airtel gaming and other services so I really disappointed with airtel.