Well, I was also among millions of people who buyed jio sim for free internet and voice and fast 4g internet past year.on that days jio was a craze among peoples 1 jio connection was their in a family or more than that also.jio was also providing good network that days.but nowerdays they charged price for that which is not a problem, they should.but they have not gained that prefect stability in network. I have 2 jio conection and a jio fi but sometime I go through speed and weak network problem. And what to say about voice calling, fully charge phone shows switched off or not reachable when contacted by someone. jio need more improvement.