Its sim spaciality. Free 4data. Free call and free sms. I used this very speed 4g data. Pease every one joined jio family and very sealing in india its presented by the realince. And realince parntership in the meak in INDIA l consept. Everyone used this sim in india.n this so called’Unlimited’ 4G data offer by’Jio’, I have exhausted the "Unlimited" Data just in two days, so there is really nothing like unlimited 4G Data. There is some limit, which Jio is not explicitly mentioning but restricting use