I think all india is know about jio but some people know about jio sim which company launch this sim I tell you that this sim is manufacture from relince and is company director name is Mukesh ambani
he launch this sim for all the people and it is use only in 4G mobile and its main good things is that it is not chargibe to do call anywhere in india and it is not chargible for using data and its is not chargibe after march 2017