I seriously recommend don't go with Airtel.
I had port my Vodafone number to Airtel with 399 postpaid plan 1st month bill was about 600 2nd month 800 3rd month 600 4th month 1600 5th month 1200.
You can see how company make profit with postpaid plan they just doing ford on the name of postpaid. Very bad experience with Airtel its CHORTEL not AIRTEL'.