Hi friends today I give my opinion about jio 4G voice. the calling app from jio team. This app is using by the customers who don’t have volte in their smartphone I have jio Sim this app for more than 2 months. The concept of this application is quite simple even is small kid can understand that. Features about that app is not so good because most of time there is connectivity problem. The design and layout is so clear and simple. this app is useful for those users which have a good Tower and connection speed is good for calling.