One of the things that has been improving over time in devices is the fingerprint reader, essential thing to be able to unlock the phone or tablet quickly. To do this, you have to have it configured in your terminal, either at the beginning or perhaps later in the settings.
Sometimes it usually happens that the fingerprint reader gives problems, either due to dirt, having a conflict or another error that is usually unknown. As a rule, they are usually faithful and fast when putting your finger on it, either on the screen, the side or the back.
Sometimes it is necessary clean the area, reset the fingerprint reader and adjust it again, as well as other things to try to fix this problem. Depending on the manufacturer and model, the fingerprint will change, so it is convenient to locate the site where it is located for its readjustment.
Clean the sensor area
In our case, the fingerprint reader is integrated into the screen (Huawei P40 Pro), but this will vary depending on the model you have, either a phone with a rear or a side reader. Therefore check the unlocking, for example it is convenient to clean the area with a microfiber cloth.
Can also be cleaned with distilled water with a small microfiber clothCurrently, product for screens is sold in specialized sites, suitable for removing dirt and bacteria. It is best to always impregnate the cloth and hit the specific area of the sensor so that it is clean and let it dry for a few minutes before using it.
Eliminate the footprint and start from scratch
One of the solutions that have fixed the problem of the fingerprint reader on Android devices is to start from scratch, erasing the footprint and adjusting it again. Phone manufacturers recommend doing this at least once every so often, some recommend this after six months of use.
To remove the footprint we have to access Settings> Biometrics and password> Fingerprint ID > Enter code if you have for the lock, Fingerprint ID 1> Delete. Once deleted, start from scratch by clicking on "Unlock device"> Register fingerprint, insert the fingerprint and wait to complete it for the new one to be added.
In other models you can find the screen lock in Settings> Security and location> Fingerprint, access the fingerprint, delete the registered one and that's it. Then you must access the same parameters and register the fingerprint in "Configure", wait all the steps and save the configuration to be able to use it.
Restore the phone if neither of the two possible solutions works
The last step would be to restore the phoneIt is the most cumbersome, probably the one you will not do unless the fingerprint unlocking always fails. To do it the best is to continue this tutorial step by step, too available on video in case it seems more practical.
Once you have been able to restore it, reconfigure the fingerprint reader and check that everything works as the first day, it is convenient to have previously made a backup of the important data of the phone. This usually fixes any of the bugs you've had previously and it will factory install everything you had when you started with it.
