Network Coverage- Arguably Airtel is the best of all when it comes to Network Coverage. If you are on Airtel then be very sure that wherever you are you will be always connected to your dear ones.
Customer Service - It’s very difficult to differentiate between the customer services of all the networks because all of them are pretty good. For Airtel I have felt that waiting time is very less and turn around time is also quick.
Charge and Billing - AIrtel never charged me for the services which I have never used.
Very reliable and the best network.