Hlo friends I'm using Jio for a last month. It's very beneficial . They provide superb service with minimum lag . They provide rich calling feature. And daily 4 g data of 4 gb . And many more facilities via my Jio app and many co apps under my Jio app .
Jio4gvoice- it's a necessary app for calling whether it's 4g support device or volte support device . Calling is held via Skype ??. And Jio enable devices enjoys rich call fear feature.
Free plan - Jio announced that they will serve free till 31 of March 2017. But after January data will one GB for one data.
I recommend to have all this superb facility.