Airtel having the largest network coverage and large customer base will make rise to many fault which will take time to be repaired but as per me the network is awesome because there are three states(Delhi NCR, Kerala, Madhya Pradesh) where I travel and till now I haven’t experienced any lack in network coverage(Note:While travelling there is lags because of tower changing and also experienced network coverage problem in hilly/remote/less populated area)overall, they are good in there work and I love to be a customer.