( Personal experience) Reliance jio is better for who have 4g phone with volte support. Volte for making hd calls. The most important thing of jio that.when I walk to the reliance store and ask for buying the jio sim, then the employee of reliance store say that the cost of the sim is 0 ruppe but you have to give us a barcode and a aadhar card. And then company says that reliance 4g sim for all who have 4g phone but reliance gives some mobile company to generate barcode. Not the all companies like redmi etc. Then where’s I will generate barcode using my redmi phone. After some day I took my father phone of vivo and generate barcode and bought simcard. And the second think that reliance jio call drop. When I call some one 10 time than its ring at 1 time. But its internet speed is soo good