Use of airtel sim last 4 year I have been the biggest problem in the network, so it is on the screen, but the call is disconnected and you have to come out a bit from the city state of its name is just 3G Net leave 2G is does not work and just get the name and service of airtel airtel worst service worst thing to do is that if someone gives airtel call the customer care call will die but will not even tell if the customer care of the airtel sim and just keep you from dying