Hi friends I am using jio sim from 5th sept 2016 after using this sim I salute to Mukesh Ambani he is a superman, bravy man any way jio sim is superb but internet speed is slow but never mind I used this sim mostly at mid night from 12am to 6am and at that time it gives me speed upto 1 mbps but it has setted a limited high speed data of 4gb a day after this it slow down to 128 kbps but that is free so 4gb free data a day means almost 120gb data per month of high speed data which easily costs rs10000 so its a gift to us so I am advising to them who are not using jio sim who has 4g mobile to go to jio store and get jio sim for free