As we all know that jio 4g voice app is built for those 4g smartphones which doesn’t support volte. Therefore it is a nice platform built up by reliance communication Ltd. To overcome the problems for the users not having volte support smartphones to make reliable communication. But the problem is that the app doesn’t works so smoothly as expected. Most of times I am unable to make or receive calls as it shows network error which is not reliable. The next condition is that you should have 4g high speed data in your account to avail the calling and messaging benefits. Totally ridiculous and worst application from my point of view. One can can’t reachable soon in case of emergency.