I have a Galaxy S24 with Google Fi. Much to my chagrin and amazement, neither Samsung’s Visual Voicemail app (with the Samsung Phone app) nor the Google Phone app provides Visual Voicemail. I can call in to voicemail (which is what I have to do, just like 1995). Google Fi Voicemail settings appear to work (e.g., setting the pin in the app works). However, the Google Phone app doesn’t have the Voicemail tab that I used to see on my Pixel. The Samsung Visual Voicemail app didn’t work with Google Fi.