New Jio sim which is recently making sound in Indian telecom market because of its affordable and cheap data and voice call offers. Yes Mukesh Ambani recently launched new jio network which is 4G network, only those who have a 4G LTE Volt feature in there Handset. Reliance jio has listed some mobile company list which support jio sim. Reliance also sell there own branded mobile ( LYF) which support jio network. As a starting offer they have announced free local and STD call for all network and unlimited data till December 31. From last two day I started using it and I get average of 15 Mbps speed in some area upto 20 Mbps I have recived. The porting option to jio network method is not clear and may be will be implemented later. I will say just go for it and enjoy the data and free call till december . After that also you can choose plan according to your requirement. There is also some complaint about call drop for many user recently.