Hello friends as u all know airtel is very big brand.they provied 3g and 4g services.but the voice call rate is very high.in Rajasthan they launch 4g service at udaipur speed is good.and they provied 4g in 3g prices rate. good network quality. Airtel is very big brand in across india and out of india also. It’s a big brand in telecommunications so u go for it. Good network and also good internet speed. But call rate are high. U found aneware in india ruler are also network coverd by airtel so don’t worry about network connectivity in across india go for it and used airtel services and custmore care services also very good go for it.