Reliance Jio first of all works on Volte it is the main function of the Simcard. It has good network connectivity all over. And it is super fast I mean the speed is near 6mbps. I had bought Jio sim about 1 week ago and I am very happy that I had bought it. Though all the rumors that it would block your sim slot by sending IMEI No. To reliance company well it doesnt and I have tested it. It has unlimted calls and data for about 3 months for all users and extra 1 year for LYF mobile phone users as Reliance Jio had published Jio Sim with LYF phone. Thats all folks. Hope you liked my review about Jio Sim. : )