The phone uses advanced OLED flexible manufacturing technology. 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, please feel free to use it. At the same time, you can try to adjust in the following ways: [Settings] >> [Display & brightness] >> [Color scheme] >> [Vivid (recommended)]. By adjusting the position of the point in the interface ball, change the preference of the screen display effect.