Yes... But you need to have your sim card volte enabled and in xiaomi firmware to exist working modem config for your sim.
In my case after got 4g voice enabled for my sim, volte started working. For vowifi needed to change the modem config to one which is compatible with my sim using qualcom pdc tool.
If you already using Volte and Vowifi with miui rom should be functional with EvolutionX too. The firmware installed with MIUI 12 should be ok. Save your data, probably will need to format data partition. My recommendation is:
(I quoted you just because. The following is to everyone.)
Raphael is redmi k20 pro i thinkI just can't install it, kinda sad.
There are two errors:
ERROR 3004: This package is for "raphael" "raphaelin" devices this is lavender;
This ROM requires miui 11 android 10 (sort of that) - perharps I am not flashing firmware correctly idk, I tried many times install just the firmware or the full miui rom, but with no luck.