As an airtel user regretting the descision of using this poor connectivity network. Talking of the speed it is useless, there is always server malfunction.
At time one is unable to make calls properly, as the calls posses various sound defects of and voice call quality is also unclear.
Calling the customer care is headache in itself as they gives various description not related to the topic and the issue remains unresolved.
It recognizes its network as the fastest. Nothing faster than a 3G network compared to other operators.
Worst ever operators and finally I will recommend not to use this network at any cost.