Now A days Airtel is very good network In signal strength But There are some Problems With High Cost In Recharge, Internet Etc. Iam Using Aritel From 3 Years 3g speed Is very Fast among another networks and by updating to 4g this is a nice feature to users, one upset thing for postpaid users Some time bill will be more then we used and there is no response from airtel, Airtel is very costly. But main Reason to use Airtel is Signal Strength,
And Very bad customer service. from airtel irresponsibility Answers from customer care centre