Bob has a Google Pixel 4a with Google Fi, but he doesn't get transcription from his voicemail like the iPhone does with Visual Voicemail. Leo says that Google Voice does dictation, so it's odd that Google Fi doesn't. But you can associate up to five numbers with your Google Voice account, so that could be the way to go. Forward your calls to Google Voice and let it do it. In fact, the best way is to give out your Google Voice number instead of your cellphone number. That way, there's no middle man.