I have got jio sim and I used it.Though it is 4G sim but it gives minimum speed of 500 kbps.it is so less than any other 4G network.network also not good.Sometimes net speed comes below 200 kbps which makes me sad.truly this 4G network is like 3G network .I have never felt that I am using 4G network .somerimes its speed goes above 1MB/s.it gives free calls that is good but sometime there is also network problem.Sometimes its network goes down below 1tower.internet speed is not good if it gives 1MB/s always than it is a good 4G network.