I am using jio 4g voice since last 3 months with my jio mifi device in my lenovo a1000.
its concept is good show that a 3g phone holder can also get the advantage of jio 4g
its layout and design is very simple to use effectively by any user.
and its features are also too good:-
1) one tap call.
2) one tap on the camera icon on the left to send an image
3) one tap the location icon in the middle to send your location
4) one tap on the urgent call icon on the right to mark the call as urgent, with a short message.
5) You can tap the video icon on the bottom left to place a video call.
6) Or you can tap the phone icon on the bottom right to place a voice call