I was purchased aircel Sim after seen their advertisement in TV. I was thought call rates are cheaper then other mobile operators as they saying in their each advertisements. But I was disappointed because they dont have strong network coverage like airtel and Vodafone. Even in some areas they dont have network. Internet speed is very slow. Even it takes much time to open google homepage. Customer service is very dull. I call them many times but they never answered my calls. Overall I want to say dont ever buy aircel sim. Its worst mobile operators service.