Mute Siri
Why isn’t Siri talking? Why I call out “hey Siri” all she answers is “mmmm”
Question marked as
She says that when you pause after invoking her. If you don't pause and immediately ask a question, she won't say Uh Huh.
Example:
Hey Siri - and you pause
Siri will say Uh Huh?
Or:
Hey Siri, what is the temperature outside right now
Siri will answer because you asked a question immediately.