If you are a TECNO, Infinix or Itel phone users and your phone fingerprint disappeared from settings due to a software issue or whatever the reason is, in this article, we will share step by step guides on how to fix your phone fingerprint.

How To Fix Fingerprint Settings Option Disappeared on Android

If the fingerprint settings option has disappeared on your TECNO, Infinix, or Itel phone, there are a few things you can try to fix the issue:

1. Restart your phone: Sometimes, a simple restart can solve the problem. Press and hold the power button on your phone, then tap on "Restart" or "Reboot" when the option appears.
2. Clear the cache of the Settings app: The cache of the Settings app may have become corrupted, causing the fingerprint settings option to disappear. To clear the cache, go to "Settings" > "Apps" > "Settings" > "Storage" > "Clear cache".
3. Update your phone's software: If your phone's software is outdated, it may be causing compatibility issues with the fingerprint settings option. Go to "Settings" > "Software update" and check for any available updates.
4. Check if the fingerprint sensor is working: If the fingerprint sensor is not working properly, the fingerprint settings option may not appear. Try adding a new fingerprint or deleting and re-adding existing ones to see if the sensor is working correctly.
5. Factory reset your phone: If none of the above solutions work, you may need to perform a factory reset. Keep in mind that this will erase all data on your phone, so make sure to backup your important files before proceeding. To factory reset your phone, go to "Settings" > "System" > "Reset options" > "Erase all data".

How Does a Mobile Fingerprint Sensor Work?

Mobile fingerprint readers—also referred to as touch ID readers—operate using a mix of hardware and software elements. A general description of how mobile fingerprint scanners normally operate is provided below:

1. Hardware: The mobile device's front or rear both contain a small, specialised fingerprint sensor. It is often made of an optical sensor or a thin film transistor (TFT) capacitive sensor.
2. Enrollment: The sensor on a mobile device takes a picture of your fingerprint when you set up your fingerprint authentication. Your finger is placed on the sensor, which recognizes the ridges and valleys on your skin, to do this.
3. Image capture: The sensor uses an array of tiny capacitors or an optical camera to capture the image of your fingerprint. Capacitive sensors measure the changes in capacitance caused by the ridges and valleys of your fingerprint, while optical sensors use light to capture the image.
4. Image processing: The captured fingerprint image is processed by software algorithms. These algorithms analyse the image, identify the unique patterns and features of your fingerprint, and convert them into a mathematical representation known as a fingerprint template.
5. Template storage: The fingerprint template, which contains the unique characteristics of your fingerprint, is securely stored in a dedicated area of the device's memory. It is important to note that the actual fingerprint image is not stored, only the template.
6. Authentication: When you want to unlock your device or authenticate for a specific app or service, you place your finger on the fingerprint sensor. The sensor captures a new fingerprint image, and the software compares it with the stored template.
7. Match verification: The captured fingerprint image is compared to the stored template using complex algorithms. The algorithms analyse the new image and compare it to the template, checking for similarities and patterns. If the new image matches the stored template within an acceptable tolerance, the authentication is successful.
8. Access granted/denied: Based on the match verification, the mobile device will either grant access to the user, such as unlocking the device or granting access to a specific application, or deny access if the match is not successful.

Mobile fingerprint sensors provide a convenient and secure way to authenticate users by leveraging the unique characteristics of their fingerprints. We will recommend you read more on how to fix fingerprint scanner on android phone on our website.

About Carlcare

Carlcare is the Official After-Sales Repair Centre for TECNO, Infinix and Itel Smartphones. We make use of original accessories only for repairs, and when you choose to repair at Carlcare you’re covered by warranty for a period (should the issue reoccur), unlike with other external repair options.