Jio is the best 4g service provider.
And its competation with airtel 4g . its take free 4g data for 3 month and voice caliing also. Its download speed are good and upload speed is also good when I am out of my home.It only sport with lyf mobiles and some models of samsung for free4g and call for 3 months. In home its speed is not so good.i think this is best sim.