iPhone 8 Plus - Missing True Tone

Hi!

My iPhone 8 Plus is not showing the True Tone option. I never replaced my screen. It's original.

The auto-brightness works fine and all of the others sensors as well.

I heard about it in this website:

https://www.valuewalk.com/2018/10/apple-ios-12-true-tone-option-iphones/

Are you experiencing problems with that?