New In-call Network Switch 4g/3g

[iMithos]

Hello everyone! I've a Xiaomi Redmi 3 Pro where I installed your rom in version 6.5.19.
The problem is that when I receive or make a call with the phone, it switch from 4G to 3G, not allowing me to use the 4G. How can I fix the problem?

Thanks and best regards

 

[Gunmoule]

This is normal if your carrier doesn't support/use VoLTE (Voice over LTE) your phone will fall back to 3G to make or receive calls. Not a bug.

Note that it should go back to 4G right after you end the call.