RELIANCE JIO gives good speed and now it is surpassing all network although it gives a lot of offers as you know free call service and data usage service and even in free you can comparison other operator in speed . if you are not using jio sim you can use and see its performance in night it gives extra speed due to less users and I think in next upcoming year it will also give a lot of offers and every customer will enjoy ins biggest 4g network. now its coverage is up to mark in rural areas and it only cover city surrounding areas but we think very soon it will cover whole country . no doubt it is best 4g network.