Ways to fix the fingerprint sensor 2024

Fingerprint sensors are a significant advancement in Android phones because they allow us to enhance the security of our devices through biometric authentication and provide convenient unlocking. However, what happens when the fingerprint sensor suddenly stops working?

This article explores nine methods for fixing your fingerprint sensor, ranging from simple to relatively complex solutions. If you’re seeking answers while reading this article, it’s best to go through it in order to save time and resources.

How to fix fingerprint sensor – Software

Below are some solutions to fix the fingerprint sensor on an Android phone, from the simplest to the most complex:

Restart your device

Restarting the device is the classic solution for most problems. It fixes most software problems, so it’s best to try before trying any of the software solutions below.

Update your system software.

Your fingerprint sensor may not work correctly due to a system error or failure. Check if your device needs a system update.

Recalibrate your fingerprint

If your fingerprints are damaged or smudged, the fingerprint scanner may not recognize them. To resolve this, recalibrate your fingerprint by rescanning it.

Try factory resetting your device.

If none of the previous solutions work, a factory reset is your last option. Restoring your phone to its original factory state can improve performance and remove any malware or bugs causing issues. However, please note that this will also delete all your data.

How to fix the fingerprint sensor

The solutions we will explore in this category are quite simple. These problems are often overlooked in times of panic. It is advisable to address these first, as the problem may be external, and doing so will help save you time before attempting a software fix.

Make sure your fingers are clean.

Your Android phone’s fingerprint scanner must be highly sensitive for optimal security. This is because it examines the most minute details of your fingerprints to ensure that only you can access your phone. Therefore, your fingers must be clean when using the fingerprint scanner.

Moisture or dirt on your fingerprints can hinder the scanner’s ability to read them. Those with sweat-prone palms are especially susceptible to this problem.

To fix this minor issue, wash your hands thoroughly and ensure they are free of moisture before scanning your fingerprints.

Clean your fingerprint sensor.

Just like dirty fingers, a dirty fingerprint scanner can impede its functionality. Moisture, oil, and dirt affect the fingerprint scanner’s performance.

For scanner maintenance, cotton swabs are your choice. These small, soft swabs are designed to access all the nooks and crannies of the sensor without risk of damage. Isopropyl alcohol or water can be used to assist with the cleaning process.

Be careful to moisten the swab, but refrain from soaking it. Since your fingerprint scanner is delicate, it is essential to prevent moisture seepage. Otherwise, instead of cleaning it, you could damage it irreparably.

Microfiber cloths are a great option if you are looking for an efficient cleaning tool. Its elegant surface ensures effortless dirt removal; However, compared to cotton swabs, they may not be as effective at reaching more minor cracks.

Check the fingerprint scanner for damage.

Typically, the fingerprint scanner on an Android phone remains as firm as the back panel. Any detectable movement or clicking sensation may indicate a problem with the scanner. Its unwavering stability is essential to ensure perfect functionality.

Given the complexity of the problem, it is best to refrain from attempting to repair it unless you have prior experience with phone repair. For the sake of safety, it is advisable to have the phone examined by a professional at a service center. Attempting to remedy the situation on your own without any prior knowledge can result in further damage.

Remove the screen protector.

Screen protectors can sometimes interfere with fingerprint scanning. This issue tends to arise when screen protectors obstruct the front fingerprint scanner.

If your fingerprint sensor is having trouble recognizing your fingerprint, it may be due to visible damage, such as scratches or cracks in the screen protector. Removing or replacing the protector is the best solution to ensure your fingerprint is read accurately.

Frequently Asked Questions

Why did my fingerprint sensor stop working suddenly?

Fingerprint sensors can stop working for various reasons, including software glitches, hardware issues, dirt or moisture on the sensor, damaged fingerprints, or interference from screen protectors.

Will restarting my device fix the fingerprint sensor issue?

Restarting your device is a common troubleshooting step that can resolve many software-related issues, including problems with the fingerprint sensor. It’s a simple and quick solution to try before attempting other fixes.

How do I recalibrate my fingerprint?

To do so, go to your device’s settings, find the fingerprint settings, and delete your existing fingerprint data. Then, re-register your fingerprint by following the on-screen instructions.

Is a factory reset necessary to fix the fingerprint sensor?

A factory reset should only be considered a last resort if other solutions have failed to fix the issue. Remember that a factory reset will erase all data on your device, so back up your important files before proceeding.

Can dirty fingers affect the performance of the fingerprint sensor?

Yes, dirt, moisture, or oil on your fingers can hinder the fingerprint sensor’s ability to accurately read your fingerprint. Keeping your fingers clean before using the sensor is essential to ensure optimal performance.


While fingerprint sensors provide convenience and enhanced security for Android devices, they can sometimes encounter issues that affect their functionality. This article has outlined various solutions to address fingerprint sensor problems, from simple software fixes to more complex troubleshooting steps.

Before attempting any software fixes, it’s advisable to restart your device and ensure that your system software is up to date. If the issue persists, you can also reset the device by recalibrating your fingerprint or performing a factory reset.

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