I am from delhi and I want to purchase an superfast internet conection. so I have visited an airtel digitel store. I told from retaler that I want to buy a superfast internet conection after listening this retaler said me that airtel 4 g is the fastest network for data speed and airtel 4 g speed is upto 15 mbps after this I purchased an airtel 4 g conection from retaler. my conecotion got activited within 24 hours. after this, when I started using internet then I saw that its speed is awesome. browsing and downloading speed was upto 15 mbps. there was not any connection errors I found while I was using internet. so I can say that airtel is the best 4g lte data network.