Suddenly VOLTE not working on my moto g4 plus I was using VOLTE services (from reliance jio in India) seamlessly since November 2016, but since June 2017 it suddenlt stopped working. I get an error "Unable to place call. Please try another method" while trying to make a call. I am able to access the internet and make/recieve calls from the Jio 4G Voice app.

UPDATES:


I have enabled "enhanced 4G LTE mode"
Did a factory reset
My jio connection is on and working. Also, I can place/receive calls from the Jio4GVioce app which means the service is working fine.
Go to Settings/Wireless and networks/...More/Cellular networks and check whether Enhanced 4G LTE mode is enabled. Somebody (you) might have turned it off accidentally.