The concept of jio is very unique.Jio wants to give the real power of 4g dataJio gives free voice for life time and free 4g data as a welcome offer but somewhere they fail.bacause I have facing the problem during the calling time.Data power is not also like real 4g its like 3g.but if you want free data then its good for you. so we know that everything has two sides like that jio has also two sides.one is good and another one is bad and I enjoy both sides.