Airtel is the most expensive mobile operator available in india and the network is also not that good which can be relied upon, I used this sim as my secondary sim as my friends tld that it has a great network, unfortunately my primary sim provided me a lot more comfort during journey as compared to this, the customer service is also not upto that mark as we would expect from a leading network operator, and don’t even talk about billing and charges, they are the most expensive network in india