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Galaxy S21 Tip: Learn Biometric security [Samsung Android 12/One UI 4]



Samsung One UI 4.0 is now available for the Galaxy S21 series (as Beta testing activity) in select countries, which is based on Google’s Andriod 12 operating system. The beta program allows users to experience the upcoming OS ahead of the stable launch.

With One UI 4 Beta 2, Samsung has made various adjustments to the user interface and functions. In addition to new features, it also enhances the security and privacy of smartphones. So, in this article, we will discuss how you can enable biometric security on the Galaxy S21 smartphones.

What is Biometric security?

Biometric security provides a more convenient but less secure device confirmation method. Under the hierarchical authentication model, primary authentication (that is, patterns based on knowledge factors, such as PINs, patterns, and passwords) provides the highest level of security. Biometrics is the second layer of identity verification, providing a balance between convenience and security.

Biometric security includes:

  • Face recognition
  • Fingerprint scanner

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How to enable Face recognition on Galaxy S21 series?

You can enable Face Recognition to unlock your screen. To use your face to unlock your device, you must set a pattern, PIN, or password.

  • Face recognition is less secure than Pattern, PIN, or Password. Your device could be unlocked by someone or something that looks like your image.
  • Some conditions may affect face recognition, including wearing glasses, hats, beards, or heavy make-up.
  • When registering your face, ensure that you are in a well-lit area and the camera lens is clean.


  1. From Settings, tap Biometrics and security > Face recognition.
  2. Follow the prompts to register your face.

Face recognition management:

Customize how face recognition works.

  1. Go to the Settings
  2. tap Biometrics and security
  3. Face recognition.
  • Remove face data: Delete existing faces.
  • Add alternative look: Enhance face recognition by adding an alternative
  • Face unlock: Enable or disable face recognition security.
  • Stay on Lock screen until swipe: When you unlock your device with face
    recognition, stay on the Lock screen until you swipe the screen.
  • Faster recognition: Turn on for faster face recognition. Turn off to increase security and make it harder to unlock using an image or video of your likeness.
  • Require open eyes: Facial recognition will only recognize your face when
    your eyes are open.
  • Brighten screen: Increase the screen brightness temporarily so that your face can be recognized in dark conditions.
  • About unlocking with biometrics: Learn additional information about securing your device with biometrics.

How to use Fingerprint scanner on Galaxy S21 series?

Use fingerprint recognition as an alternative to entering passwords in certain apps. You can also use your fingerprint to verify your identity when logging in to your Samsung account. To use your fingerprint to unlock your device, you must set a pattern, PIN, or password.

  1. From Settings, tap Biometrics and security > Fingerprints.
  2. Follow the prompts to register your fingerprint.

Fingerprint management:

Add, delete, and rename fingerprints.

From Settings, tap Biometrics and security > Fingerprints for the following options:

  • The list of registered fingerprints is at the top of this list. You can tap a fingerprint to remove or rename it.
  • Add fingerprint: Simply follow the prompts to register another fingerprint.
  • Check added fingerprints: Scan your fingerprint to see if it has been registered.

Fingerprint verification settings:

Use fingerprint recognition to verify your identity in supported apps and actions.

  • From Settings, tap Biometrics and security > Fingerprints for the following options:
  • Fingerprint unlock: Use your fingerprint for identification when unlocking your device.
  • Fingerprint always on: Scan your fingerprint even when the screen is off.
  • Show icon when screen is off: Show the fingerprint icon when the screen is off.
  • Show animation when unlocking: Show an animation when you use fingerprint verification.
  • About unlocking with biometrics: Read details on the requirements each biometric security feature has for using your pattern, PIN, or password as a backup.

Biometrics settings

Configure your preferences for biometric security options.

  1. Click on Settings
  2. Tap Biometrics and security
  3. Click on More biometrics settings for the following:
  • Show unlock transition effect: Show a transition effect when you use biometrics to unlock your device.
  • Biometrics security patch: View the software version of the biometric security features.


Here’s how to fix fall detection notification issue on Galaxy Watch



Samsung Galaxy Watch Fall detection issue

Samsung provides a Fall detection feature to the Galaxy Watches in addition to several Health alert functions. But for some time, Galaxy Watch users are facing an issue related to fall detection notifications, due to which they are not able to properly use other functions of their Samsung smartwatch.

Several community users have reported that the hard fall detection notification pops up repeatedly on the Galaxy Watch, even when no fall has occurred. If you are also facing the fall detection notification issue on your Galaxy Watch, then you can check the solution below.

The Samsung smartphone’s fall detection feature triggers a 60-second notification on your watch when it detects a hard fall. If you don’t respond, it will send an SOS message to the emergency contact listed with your location. The smartwatch also allows you to call an emergency contact if you’re in a position to do so.

Samsung Galaxy Watch Fall detection issue

If you don’t need the fall detection function during daily life then you just need to change the setting of this function.

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How to change the Galaxy Watch Fall detection notification?

For changing the settings of the Fall detection feature, you just need to follow a few steps.

  • Firstly, connect your Galaxy Watch to your smartphone
  • Open the Galaxy Wearable app on your smartphone

Samsung galaxy Watch issues

  • Now tap on the Watch Settings. 

Samsung galaxy Watch issues

  • Click on the Safety and emergency option.

Samsung Galaxy Watch Fall detection issue

  • Tap on the Hard fall detection feature.

Samsung Galaxy Watch Fall detection issue

  • Now, you just need to select the ‘ Only during workout‘ option.

  •  It is done.

Samsung Galaxy Watch Fall detection issue

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One UI

Here’s how to change the navigation bar on your Samsung smartphone



Samsung Navigation Bar height

Navigation Bar is one of the important parts of a smartphone as it allows users to control or navigate all the activities on their smartphone as per their wish. Along with changing the Navigation Bar on Galaxy smartphones, Samsung also offers various options to decorate and customize it.

If we buy a new smartphone, we need to navigate to use it. Although navigating the smartphone is very easy, yet we can make it more comfortable. How? So it is based on you in which way makes you feel comfortable using your Samsung smartphone, perhaps with gestures or buttons.

Here you can check how you can change the Navigation bar of your Galaxy smartphone.

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Samsung Navigation Bar

How to change Navigation Bar on your Galaxy device?

You can easily change the Navigation Bar of the Samsung smartphone, just need to follow a few steps mentioned below.

  • Open Settings on your Galaxy smartphone.

Samsung Settings

  • Click on the Display option.

Samsung Navigation Bar

  • Scroll down and click on the Navigation bar.

Samsung Navigation Bar

  • Select Navigation type from two options:
    1.) Buttons
    2.) Swipe gestures

Samsung Navigation Bar

Aside from this, you can also change the icons, layout, and background color of the navigation buttons in addition to height through the Good Lock module NavStar.

Here’s how to adjust height of navigation bar of your Samsung device

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One UI

3 Accessibility features you should try on your Samsung One UI 5.1 device



Samsung One UI 5.1 Accessibility features

Samsung enhances its technology day by day and One UI 5.1 seems to be a fantastic upgrade over its predecessors that brought many new improvements and features to the existing user interface. Apart from the many new features of One UI 5.1, you can also check here 3 amazing accessibility functions of Samsung smartphones that give you the next-level experience.

In the accessibility section of your smartphone, you can find some of the most innovative features of your Galaxy smartphone. The functions of accessibility are more useful for the person who is managing a disability as it helps to supercharge your Galaxy device.

Samsung One UI 5.1 Accessibility features

3 Samsung One UI 5.1 Accessibility Features

1.) Flash notification

Flash the camera light or the screen when you receive a notification, call, or when an alarm sound. To turn on this function, you just need to visit Settings >> Scroll down and press Accessibility >> Tap on Advanced Settings >> Flash notification. Now, you can see two options:

  • Camera flash notification
  • Screen flash notification

You can turn on the function by tapping on the toggle.

Samsung One UI 5.1 Accessibility features

2.) Left/Right Sound Balance

Samsung provides a separate option for adjusting the sound of the phone’s speaker and any other connected devices like earbuds, Bluetooth headsets, and more. It is a very helpful feature for those users who use it, however, the feature is not applicable for calls.

You can easily use this feature by following a few easy steps. Open Settings >> Click Accessibility option >> Tap on the Hearing enhancements option. Now, you can find the Left/right sound balance option, which includes the following two sliders.

  1. Connected device
  2. Phone Audio

You can adjust them by sliding left or right as you feel convenient.

Samsung One UI 5.1 Accessibility features

3.) Accessibility button/gesture 

You can add Accessibility floating buttons to easily access several functions of the Accessibility section. Also, you can change its size and transparency accordingly.

To add the Accessibility button, you just need to open Settings >> Accessibility >> Advanced Settings>> Accessibility button/gesture >> Select actions, and it is done.

One UI 6.0

Samsung’s One UI 6.0 will release later this year, while the Beta program could start by July 2023. Despite a long gap in the timeframe, Samsung silently released support for One UI 6 software to the stock apps for some users.

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