Does the red light come on when I use my face ID?

I've never seen a red light when I used my face ID. As I watched YouTube videos, The red light came on. Is my iPhone broken?

1218 2018-10-26 Gentleman

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I don't have a red light either, but it works fine

Gentleman 7 years ago 0

I've never seen anyone come in either

Gentleman 7 years ago 0

It's because the red light is infrared
I can film infrared with the camera, but I can't see it with my eyes

Gentleman 7 years ago 0

I knew something I didn't knowkk

Gentleman 7 years ago 0

Oh, I see. Thank you for the explanation

Gentleman 7 years ago 0

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