Well reliance jio is a free internet and calling service which is providing free internet and calling upto march 31 2017 by owner of tata Mukesh Ambani the network coverage is very good in some areas it may not so good but in my area I got full signal at hajratganj and the speed is not so good in noon time but in morning time the speed is awesome it is not actually a 4g speed its a 3g speed and from evening to full night the speed is very good and the customer service is also very good and there is no charge of billing upto march 31 2017 so keep enjoying the jio service.