I recently got a Oneplus 6, and with a couple of tweaks, managed to get volte and vowifi working almost perfectly. I need this feature for work as my house is a dead spot.
The only problem is, whenever I'm using these services, all my incoming calls come in as unknown number.
I've tried wiping cache, reset network settings, trying to find a different APN to use, but no luck so far.
My guess is that it's not provisioned on my account or I'm missing an APN setting (ims maybe).
if anyone could help me out I'd really appreciate it as I'm out of ideas for how!