0k so lest start with the concept of this app why this app was design and what are the benifits of this app so since a year RELIANCE has started a free for 1 year service to all customers wherein they can get free Jio sim and they can use free internet and free calling to any networks within INDIA.This app is just the part of the JIO service where people can make unlimited free calls to any network in India and and also send SMS to any network within India. so coming to the layout and design out this app is easily usable by anybody.and talking about the feature and functions of this app I have already written this above this app is very useful for longer talking over the phone if you are because at the end this app give us free voice calls to any networks in INDIA. but is u want to make some short duration call then I would recommend you people not to use this app at the crons of this app is that it take some longer time to connect calls and send SMS to any network. The network of this app is average it s good at the main places but not good for places where there is kind of remote area. ok so at the end this app is great form long calls at some specifics location but not at the places where there at kind of remote area.