To obtain better fingerprint images for acquiring good performance in various scenarios, the fingerprint spot keeps a higher brightness. You can turn on the Low light fingerprint unlock option in the settings interface, however, this function will increase the unlock time.
To turn on the Low light fingerprint unlock option, please refer to the following steps:
1. Open the [Settings] APP on your phone;
2. Navigate to [Fingerprints, face data, and screen lock];
3. Select [Fingerprint unlock];
4. You will be prompted to set a screen lock before using the fingerprint unlock. After you set a screen lock, add your fingerprint;
5. Then your phone will enter the fingerprint unlock settings interface. Scroll down and turn on the [Low light fingerprint unlock] option.