Airtel is a good network company have a good signal strength in most of the places I started using it a few months back its signal quality is good but sometimes the main problem that occurs is while using internet its signal gets changed from 4g network to 3g even sometimes it goes on 2g which really gives a slow net surfing overall its internet speed is all good in most of the places . Talking about its calling quality its excellent no network issues are there while calling its data plans monthly recharges are not that much costly too it gives 82 days unlimited calling and 1gb data per day in just 448 rs and 90 days for just 509 rs so overall airtel is a good network and we can go with it I hope I helped u.