How to resolve speaker and mic issue on lollipop 5.0?

[Nirav Chaudhari]

I have a Samsung galaxy note 3 SM-N 9005. It is an lte enabled phone. I have upgraded it to 5.0 lollipop version of android. I live in India. My Telcom operator is jio. And since it is only volte network, I have to use jio4g voice app to make and receive calls while connected to a jiofi router on a Wi-Fi. Also I can make calls normally through other networks Sim card which I have inserted in the phone. Now my problem is that when I place or receive calls normally I can not talk through speaker phone. I can hear voice from other end but the other person can't hear mine. So it seems that speaker might not be working. Now it's other way round with the jio4g voice calling application. I can talk and hear on speaker but if I put the phone on ear I cannot hear any voice although I am not clear if the person on other end can hear mine or not. While on other hand whatsapp calling works fine, both ways i.e on speakerphone and while putting it ob ear. I have done a hard reset but the problem didn't resolve. Can someone please tell what to do to resolve the issue.