In this era of 4g Airtel is doing a large promotion but nothing of use when you dont have a high quality of product of whose you are showing dream of. Airtel says its the largest and fastest 4g network in India but when I brought it Everything turned into a mere dream. For holidays I went to my granny house and the largest 4g network was not available there. And it proved to be turtle when my friend and I tested our networks speed and airtel lost the test and idea wins after that I ported from it and changed my cellular network.