Jio Group Talk works on a VoLTE phone with a valid Jio SIM.

For dual SIM users, please take care that you enter your Jio SIM phone number in the application for it to work.

FAQ of JioGroupTalk,

http://apigw.jio.ril.com/help/jiojgt/faq/

Simple Interface

Create and Manage group conference calls for up to 10 members

No need to add users one by one. Select multiple contacts in one Go

High Quality Voice

HD Calling support to enable high quality HD Conference calls

Real time Conference Set up