Hello friends. Airtel is the best service provider network in india as per my experiences you can go any interior areas it works great no signal problem no voice cutt even in journey its work fine no disturbance and services also fast. I done mobile No portability from reliance to Airtel with in 5 days reliance sim migrated to airtel. because other service providers take min 7 days to migrate from other network to another network. but quite charges are more from the others service providers like sms or others .but its fine. network is superb no competition.
Great Network.Great services.