Welcome to vivo Support

How does Smart keep bright work?
The front camera detects that the face is facing the screen so as to keep the screen on.

How to enable Smart keep bright?

You can go to Settings--（Shortcuts and Accessibility--）Smart motion—Smart(Auto) turn on/off screen to enable "Smart keep bright".
Currently only some models support this feature.

Warmly Tips:
This function may not work in the following situations:
1. You are not facing the screen;
2. The front camera is blocked;
3. You are using it in strong light or a dark place;
4. The front camera is used by another app.