Airtel is most popular mobile operator in India. its service is very fast and all over india even in village its service is admirable. Some other network in village there is now tower or netwrok. I use many network sim but among them is like Airtel most Powerful network in mobile service in call service and internet service. Airtel like its name air it network flows everywhere. there is also good schemes in recharges of full talktime and 3G and 4G netwok. I prefer everyone to use Airtel. Many years ago when I go to village some other network fails, I found airtel network in my friends mobile full so I purchase Airtel sim for my mobile. Airtel postpaid and prepaid services both is very good. Airtel Money transfer services I like most. sms pack, roaming pack is also very good.