Jio sim launched in 2016 this service provide by onner of jio mukesh ambani he is the founder of jio network jio provide to us unlimited data and calling till 31march 2017 even free of cost and network covrage will good after some time in all place customer service is very good they always provide great solutions will not pay any amount for use data and calling till 31march 2017 after 2017 changes will be actvate on our jio connection thank jio