In the telecom industry jio have created a revolution by giving free data and calling services till dec 31 .But still a lot have to be improved for the services of jio because in recent times the speed of jio have declined like anything .Moreover the free calling services which have been provide by jio have lost it way.
Calling of jio is no doubt hd but the call are no being made once becuase you have to try thrice for getting the call connected.But if you are getting 4g for free so you cant be dissapointed because its all free.
In the end jio is good because its free .