This app having nice graphical user interface will replace your sms app in build in phone and allows you to chat with other coustmers on jiochat.
This app makes the call over jio Volte network.
To use jio4gvoice you should have the volte network; it is basically a internet based network that makes your call over the internet. As JIO is expanding and improving the services there is lottle bit problem on the other network but works totally fine on JIO TO JIO