I was hoping it would be fastest network ever.but I was wrong. There are places were there are no signals of jio.so what should we do where there is no network found for jio 4g. . one cannot rely alone on this network as there are many places where there is no jio network available. Come to its calling quality .it is ok but it is not so good because there are many other network to which jio network is unable to connect .it sounds like busy tune. you keep on calling then after some time it will connect