I m used jio sim since september but that time calling doen’t take at right time care speak currenly all route busy but net speed to good . jio start all service are absolutely free like massenging calls or net . after a six month it started membership and recharge 408 not soo costly becuse it goves to much facility to their customer jio start their own app like movie, cenema, jio music, news or others app are avalable on playstore .In my experience very big change for other telecome companies they start very expensive plain in 3g but jio start free of cost 4g plan nd call or many more things . After membership I have used nothing has been change I loved jio music or caller tune feature thankx jio