Reliance jio has entered in the market with awesome offers, they offer unlimited voice calling, unlimiteg 4g internet and other jio services.I am using this joi sim last 5 months , the speed of the internet is now becomes very low, as they offering high speed internet, the first month speed was good, but after each coming months , speed of internet is less.The quality of voice call is ok if you get the call, but you will not get the call instantly, you need to try 6, 7 times to get a call, always shows network busy.I am disappointed with the service of jio, but why I am not leave this sim , the reason is they are offering atleast free internet.