Actually I got a chance to use the JIO 4G in Jammu And Kashmir and I was quite suprised to see that speed. It was really unbelievable that 4G could be that fast.
Its giving download speed of 35mbps and upload speed around 11mbps on ookla’s speed test and while downloading song videos and other stuff from playstore it was giving actual speed of 2.5mbps and quality of VoLTE is also awesome.
The only thing to see is that what would be their rental plans as that could be a game changer. What I had used was Preview offer with LYF handset but I do not know the rates. So lets see what haappens but yes I can assure you that almost every where I got the network coverage so please try it before purchasing it.