Airtel is the best mobile network in India.
The network coverage is very good. Also if you face any problem then you can get it solver by calling the airtel care.
The call rates and tariffs are good.
The Internet: Airtel providesyou with high speed internet , YouTube works buffer-free on airtel.
The calls: To connect to a call you don't have to wait much and the voice is crystal clear.
I'm really impressed with Airtel