

I still use Virtualbox, configuration is way easier with the GUI
To be fair you can pair KVM/qemu with any GUI manager and have a similar interface to VirtualBox/Hyper-V/VMWare/etc. virt-manager (https://virt-manager.org/) is a popular one for example, I just started using it and it seems to work well for what I need.
Normally I’ve been using VirtualBox but for whatever reason it asks me to recompile the kernel on Debian 13 just to launch. Meanwhile qemu just works.


Strictly speaking Google Fi is a MVNO. After losing Sprint/US Cellular access a while back nowadays they are a T-Mobile reseller e.g. you’re getting access to T-Mobile’s network and coverage with Google Fi.
For what it’s worth my Google Voice phone number does show up as being classified as a VoIP number so that might be more along the lines of what you’re thinking. The phone number I have on Google Fi does not show up as VoIP.