How to Enable VoLTE on HTC U11

[Android Central Question]

Hi,
I bought my HTC U11 from Dubai and i live in India. I wants to use direct VOLTE function on my phone but unfortunately my phone is not support direct VOLTE due to its ROM designed as according to DUBAI. I have tried mobile operator VOLTE app (Jio4GVoice) on my phone but it is not as much good as direct VOLTE calling works. Is there any way to update my HTC U11 ROM as according to India Network. Which can enable VOLTE & WIFI calling feature on my HTC U11.

 

[B. Diddy]

I moved this to the U11 forum for more specific traffic.