Reliance jio is a very good market value brand at present time. It provides very good service to the people. Now a days it offered a 3 months free plan in which all the jio users can access free 4g data, free video calling and free chats upto 31st march 2017 over the jio network. So I suggest all to use jio network to get its free 4G service. Now a days users face a great problem that is slow network problem in jio sim.But all time network is not slow. Sometimes it provides very good speed and sometimes it provides slow service depending in what time do you use jio sim.every 3 hours, its speed is change. To get the best 4G speed in jio sim you can use it during 2.00am-6.00am. After 1 GB is used its speed is slowed down ( upto 128 kbps) . I also use jio sim .Thanks