Airtel is said to be the top Mobile Operator in India. I dont know why people say it the best network operator. First of all it doesnt provide that much coverage area as it claims to provide in Jaipur. If I go in basment then the Airtel network is gone.
The customer service is not upto the mark. I gave a secondary mobile number at the time of buying my Airtel number. After some days I started receiving calls from airtel to port my second number to airtel. I denied this and they said OK. But this continued for next few days and at last I had to say them that if I get such calls anymore, I will port my current airtel number to another Operator. After this they stopped calling.
The prices of tariffs and data packs are too high. Now a days they started 1GB per day 4G data for 28 days in around 330INR. But the speed of that data is mostly less than 3G. Sometimes it gives nice speed but most of the times its speed is below 3G, i.e., between 150 to 250 KBps.