Airtel mobile opreator is the one of the best mobile opreator at present time in india. I am using airtel since last 10 year and my family also used airtel. airtel service was really very good. my first mobile bought and enter sim 1st sim only airtel. airtel is one of the best using network, data usage and call rates. I would say than airtel. airtel provides network almost everywhere. I have never faced issue regarding network. I personally prefer and use airtel, it has best network coverage even in rajasthan.