[wongarsu]

Honor phones have this in the quick settings (the thing that opens when you slide the right side of the top bar down), labeled "Motion Sickness". Felt well-explained and discoverable.

But the beauty and pain of Android is every brand having slightly different UI. This might well be a manufacturer-specific feature. Or maybe it's a common Android thing that some brands just expose better than others

[esperent]

On Vivo it's called "Motion Cues". Subtitle: "Dots shift forwards and backwards during acceleration and deceleration". And then it says in tiny font it's for motion sickness, I guess I didn't read that far last time.