There is a serious issue with Airtel Network in New Delhi, I usually travel there on business trips. This week, I found out how helpless I am without a network coverage. There's no proper signal and the signal altogether vanishes if you are travelling in a car.
The so call 3G and 4G networks are non existent in New Delhi, the TRAI needs to seriously follow up on the network coverage of Airtel and make them improve it.