[brandonhorst]

Google Fi and Google Voice are not the same thing - Fi has no such built-in protection.

[aesh2Xa1]

I think they do have the same feature, despite being different services. In fact, I believe that the call screen service is offered even on any Pixel phone, regardless of carrier (Google Fi).

https://support.google.com/voice/answer/9262934

https://support.google.com/phoneapp/answer/9118387