Airtel is the best mobile operator . I am using airtel from 4 years. The service of airtel is very good. Network is available at all the places. Time to time you got the best offers that is suitable for you. The internet speed is very very good of airtel. It is like 4g. The charges on the services of airtel is not high. If you want a postpaid plan than you got any plan that you want or that suits you as per your requirements. The costumer service of airtel is very goos. They solve your problem very easily and very fast. There are no hidden and extra charges for any thing you want. The costumer service is free for every costumer and available for 24 hours and all days.