Why does the Xiaomi 15 Ultra screen turn red/green when viewed at an angle?

Thank you for your support of Xiaomi. The phone uses advanced OLED technology with the latest generation of luminous materials to enhance screen brightness. When viewing the phone at an angle, slight color differences will occur due to the different refraction of light from various colors. This is a normal phenomenon. Xiaomi's products undergo rigorous inspection before leaving the factory to ensure they meet Xiaomi's specifications, so you can use them with confidence.
You can also try to adjust as the following settings:
1. Go to [Settings];
2. Tap [Display & brightness];
3. Tap [Color scheme];
4. Choose [Vivid (recommended)].
5. By adjusting the position of the point in the interface ball, change the preference of the screen display effect.