Airtel tells that they are fastest network, they tell that according to ookla speed test airtel is the fastest 4g network but anyone can check it according to ookla speed test jio is the fastest of all 4g network.Network for voice calling is good but 4g network is not as good as shown in advertisement.Airtel needs much improvement in their customer service as well.The power of airtel has decreased very much because there was a time when airtel was the ruler of market in this profession, but now airtel service is not very much good and network is also not upto the expectations.If someone asks for my suuggestion airtel is not useful now a days.The best mobile operator in todays date is none other than jio.Thank you very much friends you spent your valuable time in reading my opinion.Have a good day.