What should I do if my mobile phone fingerprint can't be used?

If you use Huawei mobile phone, the device vibrates when the fingerprint is unlocked or the screen prompts that the fingerprint matching fails. This situation belongs to the failure of the fingerprint sensor to verify your fingerprint, and it needs to be checked according to the following precautions:

First, please give priority to the following methods.

1. Please ensure that there is no dirt and water stains on the screen and finger surface of the mobile phone when unlocking, otherwise it will affect fingerprint recognition.

2. It is suggested that you delete the original fingerprint, re-enter the fingerprint and try again. When inputting, please adjust the position and angle of finger contact and press it moderately, which will increase the area of fingerprint input and the higher the probability of success when unlocking; The fingerprint input area is too small and the input position is single, which may lead to low success rate of unlocking.

I suggest you restart your mobile phone and try again.

2. If the above troubleshooting methods can't solve your problem, please further troubleshoot in the following ways according to your fingerprint unlocking type.

1. If your mobile phone fingerprint is in the screen, it belongs to the fingerprint unlocking in the screen.

(1) In principle, when unlocking the optical fingerprint in the screen, it is necessary to obtain the light intensity reflected by the finger fingerprint. If the film does not meet the standard, it will affect the light transmittance, weaken the intensity of reflected light, weaken the signal collected by the sensor, and make unlocking insensitive. Therefore, it is not recommended that you stick a thick tempered film. I suggest you tear off the film and try it, or stick a qualified special protective film at the nearby Huawei customer service center for free and re-enter your fingerprints.

(2) Because the fingerprint on the screen belongs to optical fingerprint, the strong light environment will also interfere with the fingerprint: if the sun shines directly on the screen, there is a strong light source nearby to directly illuminate the screen. , you can block the light source a little before trying to unlock it.

(3) The screen is broken and there are cracks in the fingerprint area, which will also affect the recognition of optical fingerprints in the screen. I suggest you change the screen in time.

2. If your mobile phone fingerprint sensor is located under the back, side or front of your mobile phone.

(1) If the finger peels easily, the finger lines will become shallow. I suggest you record more finger prints.

(2) If fingerprint identification is not sensitive only when charging, I suggest you unplug the charger and try it.

If the above methods still can't solve your problem, please back up the data in advance (WeChat /QQ and other applications need to be backed up separately) and bring the purchase voucher to the nearby Huawei customer service center for testing.