It’s pretty fast and the other services like JioPlay, JioMags, JioOnDemand, etc. and unlimited HD Voice calls, HD Video calls, Unlimited SMS, etc. are like icing on the cake. I am using jio sim for the past 4 months and travelled to dehli, Mumbai, chennai, Banglore. The speed is amazing. But after Mukesh Ambani’s AGM speech and fee commercial sim launch, the speed has come down a bit. It’s still around 2mbps in Thane. It has 10million customers now for jio. The charges is free for all. Calling in Hd quality & net is super duper fast