I am a user of Airtel since I have brought my first phone. Oh wait, The second phone, the first was of BSNL which lasted for two days because of its poor network. Even till today, both of my networks are airtel.
But, If you think that I have chose Air tel as its the best operator, you are wrong. I have chose airtel as it is less worse than other operators.
The thing I like about this operator is that They have very strong network coverage. Even, When I go to remote places where no other network is available, Airtels network is slightly available almost everywhere.
The thing I dislike is that, The cost of each plan, they are sure to empty your pockets in a jiffy, seriously, who pays 248 rupees for 1 gb 3g when a competitive operator is giving it for 150 rupees only. I strongly dislike the operator for this reason only. even the calls are pretty costly unless you can take some plan and guess what even the plans are also really costly