The jio sim gives the offer of the jio preview offer in which you get the unlimited access to calling , data, wifi, msg, jio apps but it only giving the 4gb data per day after 4 gb is over it is giving very slow speed and the network is not proving the 4 g speed it is giving an average speed of 2g and 3g speed and when you call someone the number not busy aslo but after dailling with jio sim it is saying the number is busy and it will not connecting call some lanland umber and some std numbers and there is very shortage of sim also and it is very long time to get the sms for activation and it is not giving hd voice