I am using this reliance Jio from 10 September 2016.However it was launch on 5 septmber 2016.it has nice data speed in my area with HD calling but in some areas the speed id very low.it need VoLTE in mobile to access the HD Calling & Videos Calling features.the netwrok coverage is very good in everwhere however the data speed is less sometime.you can get Jio Welcome offer till 31 Dec 2016 with unlimited Data, HD Calling and Unlimited SMS.