I wish you brought this back.
I've tried using Bixby but get lost and never get it to work.
Previously it was just a setting in call settings.
Best thing about it, is no one had to register a voice, so anyone could shout answer, to answer.
It went straight to speakerphone too, so you could litterally answer on the way to your phone.
As a disabled person, who misses calls cos I ain't fast enough to get to my phone in 30 seconds.
.....
If I helped or solved your problem, please like or tick solved.
Have been using phones since 1993, and am self taught.
I offer advice for free, cos I think it'll help, if it doesn't, explain why, I might learn something new too.
Current phone Galaxy S22 Ultra
Previous phones: most S series, Note 2, Samsung Alpha, iPhone 3gs, far too many Nokia's!