When Jio launched its services initially I felt bad as I dont have a 4g handset so I cant use the jio wecome offer, .
But later I came to know about this JIO Voice app where 3g users can use it with the help of jio wifi router. Then immeidatly I had made a purchase of the same and started using it.
I would really say thanks to JIO and team regarding this and using the app is so ease and the call quality is also good. Some times it might act weired due to phone issue and its not app.
I was fully happy with the app as I am getting free calls;) and that too with out 4g handset. I would like to say thanks to JIO