Nubia Z11 Mini , still no volte support even after regular daily updates

I tried the 14th feb update of the nightly build for Nubia z11 Mini , and even after daily updates, i can’t find volte… i tried switching sims, tried everything but the volte simply does not work.
i want to use the rom, but can’t if there’s no volte,
Please Fix the issue
Last version tried : 14th feb nightly build.

this problem had been long long time ago. just give up it.

I also want to use the rom ,I love it very much,But sometimes it can restarts.And the developer says it can’t be repaired.So I suggest you stop using or contact the maintainers.