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If there is a color change on the screen of the Redmi Note 14 Pro 5G when unlocking with fingerprint in dark environment, please refer to the following details:
1. OLED screens light up individual pixels rather than using a backlight. When unlocking, the pixels around the fingerprint sensor or across the screen may activate or adjust slightly, leading to subtle color shifts;
2. When using fingerprint unlocking in a darker environment, as the brightness of the fingerprint icon is relatively high, it will have a slight impact on the brightness and color of the screen. This is a normal phenomenon and you can use it without worry.