I find the fingerprint reader on my phone to be the most useful tool for protecting my device. I became accustomed to using it from the first time I tried it, as it is very convenient. However, there have been some issues with its performance over the years.

While improvements have been made, there are still days when it doesn’t work properly. I have found that this can be frustrating, as it can be difficult to determine the cause of the problem. Sometimes it is something that I have to deal with on a daily basis, as my phone may not recognize my fingerprint.

I will share some of the reasons why this may occur, as well as the steps I have taken to address the issue when it arises.

Fingerprint Reader Failure: Is Your Finger the Culprit?

When you first activated the fingerprint reader on your smartphone, it may have worked seamlessly, but now it struggles to read your fingerprint. This issue can be caused by various factors, including some of the most common ones.

For example, if you try to unlock your phone after your hands have come into contact with water, sweat, or any other type of moisture, it can be difficult or impossible to access the device.

Another reason could be cold temperatures, as it can affect the sensitivity of your fingers and cause dryness, which in turn can prevent the sensor from working properly. It may be due to improper placement of your finger on the sensor, which can occur when you are not paying attention or are in a rush.

Change Your Screen Protector or Case for Better Fingerprint Reader Performance

It may seem basic, but checking if your screen protector or case is affecting the fingerprint reader’s performance is a simple step that can be easily overlooked. If your fingerprint reader is not working, it could be that the screen protector is not compatible or is interfering with the sensor, or that your case is making it difficult to access the sensor.

To troubleshoot this, remove your case and screen protector and check if the fingerprint reader is working properly. If the problem persists, it may be that the screen protector has poor sensitivity, is faulty, or does not support the fingerprint reader feature. If you do not have any screen protector or case, proceed to the next step in troubleshooting.

PET mobile screen protector

Re-register the Fingerprint

If your fingerprint reader is not recognizing your fingerprint due to the reasons mentioned earlier, one solution is to re-register your fingerprint on your mobile device. This can help the sensor to better recognize your fingerprint with updated data. To do this, go to your mobile settings and follow the steps outlined.

The section you are looking for may be labeled “Passwords and Security” or something similar. Another tip is to try using another finger or adding a new one in addition to your primary finger, in case this type of problem arises.

Here are the steps to re-register your fingerprint:

  1. Go to mobile Settings
  2. Look for the section Passwords and Security
  3. Press on Unlock with fingerprint
  4. Confirm the pattern
  5. Delete the fingerprint you had
  6. Press on Add fingerprint
  7. Move your finger until it fully recognizes it
  8. Follow the steps and confirm.
  9. If you think this may be the problem, you can change the recognition method from Touch to press or vice versa.

The process may vary depending on the mobile, but it should be similar to this. Once you’ve completed these steps, try to see if the fingerprint reader is now working correctly.


Old Mobile: Time to Upgrade?

The problem may be that your mobile device is already a few years old and the fingerprint reader has been heavily used, especially if you’ve used it in harsh conditions, or if the quality of the reader is not good or it has been damaged over time. This can happen with fingerprint readers located on the screen, as well as those on the side or back of the device. In some cases, the only solution is to replace the device.

If this is the case, try cleaning your mobile device properly and make sure that the problem is not caused by a recent update or that it needs to be updated. It’s also worth checking if your device has been dropped or suffered a blow, and considering that it’s old, it may not be worth fixing.

A less drastic solution is to change the security method, such as using a pattern or password, although if you’ve grown accustomed to the fingerprint reader and can’t live without it, you may consider buying a new device. However, it’s important to note that this problem can occur on new smartphones over time, but you will always have the option to use the classic PIN as a backup.