I am using airtel since 2012 and I would like to say about its network performance, it is very good in comparision with other operators. But it has very expensive call rates, net pack, and other services. But its network coverage is good therefore I liked using it. Internet speed on 3G is better. But on 2G it is very slow airtel should increase 2G browsing speeds. One more thing I use facebook a lot but on some apps the facebook loads very slow. Airtel should fix that. Call drops are geting solved.