Which phone case has a Yongdu button?

There's a phone case that controls the volume by turning it around, even though it's not a volume button.

I was wondering what the name of this case is.

And there's a separate volume button, so what happens if I turn it around?

Is it just a design?

249 2019-01-14 Gentleman

It's a case called catalist
It's characterized by a long head design
It's a silent dial button

Gentleman 6 years ago 0

Thank you for your detailed reply.
I don't understand, but if it's on mute, do I need to dial it?
I think it's just silent or not

Gentleman 6 years ago 0

If you turn the button up and down, it's silent. I think it's made for fun

Gentleman 6 years ago 0

Aha, I see.
Thank you for the explanation.

Gentleman 6 years ago 0