I took a 4G sim it was activated after two days, customer service is so irresponsible and careless of their duties and responsibility is not followed by them, I first of all got the sim activated after two days and they are helping at me if I ask about the late activation of sim they are asking me topper by sim to another company and their signal is very weak in my are in Vijayanagar Bangalore attiguppe I ask him to plant a server one in attiguppe they ask me to fund for it I said am I ambani to fund for it because problem is ours the content doesnt respect, so we can say that they are irresponsible of their duty, so I ported my sim to Vodafone , very their is good offer then airtel.