Thank you for your support of Xiaomi. For a better user experience, we use a four-curved screen. Due to the different refractions of different colors of light, there will be slight color differences in the curved area of the Xiaomi 15 Ultra, which 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.