I have never ever seen such a sim which provides us free data, calls, messages and calls its really very good product launched by the ambani.the net spped is also fast there is some problem with the network because the network is not available at some times so it is very diificult to use the other feautures are rocked in it .so many peple are using the jio but its sad to listen that jio is going to be dtop its free service from 31st march ut it has been extended for 12 more days.in order get free voice calls jio prime enrollment is required .for unlimited data payy 303 rs and use unlimited data for 3months .thanx mr, ambani for such a great service