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    • Android 12 update vs One UI 4.0 vs One UI 4.1: update Galaxy S21, S20 and S10 to Android 12
      • Top 12 new features in Android 12 update for Galaxy S21, S20 and S10
      • How to use Extra Dim on Galaxy S22, S21, S20, and S10? How to use Extra Dim on Galaxy S22, S21, S20, and S10?
      • Should I enable Protect Battery to limit the maximum battery charge to 85% on Galaxy S22, S21, S20, and S10?
      • Do You Need to Enable the Suspend Execution for Cached Apps on Galaxy S22 or Galaxy S21, S20, and S10 with Android 12 update?
      • How to Automatically Convert a Photo to a Time-lapse video with Scene Relighting on Galaxy S22, S21, S20, and S10?
      • A complete guide for Writing Assistant on Samsung Keyboard on Galaxy S22, S21, S20 and S10 (with Android 12)
    • How to charge Galaxy S21 battery properly?
    • Ultimate Guide for Using SIM Card on Galaxy S21
    • Master Meaning of Galaxy S21 Status Icons and Notification Icons
    • Layout of Galaxy S21, S21+, and S21 Ultra
      • How to Use and Customize Galaxy S21 Side Key?
      • How to use Galaxy S21 quick settings panel?
      • How to use touchscreen gestures on Galaxy S21?
      • How to power on, power off, and reboot Galaxy S21,even when the phone hangs?
      • How to migrate to Galaxy S21 with Samsung Smart Switch?
    • Understand and Use Galaxy S21 Lock Screen
      • How to lock Galaxy S21 screen?
      • Master Galaxy S21 Lock Screen Settings
    • How to Use Galaxy S21 Home Screen?
      • How to use widgets on Galaxy S21?
      • How to Customize Galaxy S21 Home Screen?
      • How to use LED icon editor to customize LED icons for Smart LED View Cover and LED Back Cover?
    • How to use and customize Galaxy S21 navigation buttons and navigation bar?
      • How to use navigation gestures on Galaxy S21?
      • How to use NavStar (Good Lock) to customize navigation buttons and navigation bar on Samsung Galaxy phones?
  • New Features
    • Top 13 new features in One UI 5 update (Android 13 update) for Galaxy S22, S21, and S20
    • Android 12 update vs One UI 4.0 vs One UI 4.1: update Galaxy S21, S20 and S10 to Android 12
    • Master Google Discover and Samsung Free on Galaxy S21
    • Top 6 disappointments of Galaxy S21 Ultra
    • Galaxy S21 vs Galaxy S21+ vs Galaxy S21 Ultra
  • Camera
    • How to use Galaxy S21 Camera App?
    • How to Use Galaxy S21 Camera Modes?
    • Ultimate Guide for Galaxy S21 Camera Settings
    • How to use Galaxy S21 camera quick launch?
    • How to set and resize photo size on Samsung Galaxy S21, S20, S10, and S9 without using any third-party apps?
  • Accessories
    • How to use Galaxy S21 Smart Clear View Cover (S-View Flip Cover)?
    • How to Use Galaxy S21 Smart LED View Cover (LED Wallet Cover)?
    • How to use LED icon editor to customize LED icons for Smart LED View Cover and LED Back Cover?
  • User Manual
Samsung Galaxy S21 Guides

Samsung Galaxy S21 Guides

NavStar

How to use Galaxy S21 quick settings panel?

Last updated on: November 27, 2023

 use Galaxy S21 quick settings panelGalaxy S21 quick settings panel (aka Galaxy S21 quick panel or Galaxy S21 quick setting buttons) lets you turn on/off some features or change some settings quickly from a dropdown panel without navigating through the Galaxy S21 Settings.

This Galaxy S21 guide explains what Galaxy S21 quick settings panel is, how to access the Galaxy S21 quick panel, the components in the quick settings panel on Galaxy S21, how to customize the layout of the quick settings panel, and how to add (and remove) buttons to Galaxy S21 quick panel.

Update: in the Android 14 (One UI 6) update for Galaxy S21, S22, and S23, the quick settings panel was greatly improved with a new button layout, smart flight mode, and instant access to the quick settings.

What is Galaxy S21 quick settings panel?

Galaxy S21 quick settings panel (aka Galaxy S21 quick panel, quick settings buttons) is a special page with some buttons for you to access or turn off some features directly without digging into the Galaxy S21 Settings page.

Just like other Android phones, you can turn on or turn off some features quickly on the quick settings panel of Galaxy … Read the rest

How to use NavStar (Good Lock) to customize navigation buttons and navigation bar on Samsung Galaxy phones?

Last updated on: March 31, 2024

You can customize Galaxy S21 navigation buttons and navigation bar with NavStar (a module of the Good Lock app) if you are not satisfied with the default navigation buttons and navigation bar.

This Galaxy S21 how-to guide explains what NavStar is, how to install and enable NavStar through Good Lock,  and how to use it to customize Galaxy S21 navigation buttons and navigation bar.

Because NavStar works identically on all Samsung Galaxy phones with Android 11, this guide applies to not only Galaxy S21 but also other Galaxy phones with Android 11 updates, including Galaxy S20, Galaxy S10, Galaxy Note 10, and Galaxy Note 20.

This guide focuses on customizing Galaxy S21 navigation buttons. If you want to customize the navigation gestures on Galaxy S21, S20, S22, or S23, please check this guide.

What is NavStar (and Good Lock)?

Samsung removed most of the navigation bar customizations (e.g., as in Galaxy S8) when One UI was introduced. On Galaxy S21, by default, you can only customize the button layout, as discussed here.

To cater to seasoned Samsung phone owners, Samsung put most of the available customizations into NavStar, which is NOT pre-installed. Most Galaxy S21 owners who… Read the rest

Understand and Use Galaxy S21 Lock Screen

Last updated on: November 27, 2023

Understand and Use Galaxy S21 Lock ScreenYou have to use the Galaxy S21 lock screen to secure your Galaxy S21 and control access to your phone and data.

This Galaxy S21 how-to guide explains the role of the Galaxy S21 lock screen, pages, layout and the meaning of each item on the Galaxy S21 lock screen, and how to use gestures on the lock screen.

The lock screen is identical on all Galaxy S21 phones (Galaxy S21, S21+, and S21 Ultra). So, this guide applies to all Galaxy S21 phones.

If you have updated your Galaxy S21 to Android 14 (One UI 6), you can reposition the clock on the lock screen.

The role of the Galaxy S21 lock screen

The lock screen is an essential part of a smartphone.  It is part of the security system of the phone.

You can think Galaxy S21 lock screen as the only entrance for your Galaxy S21. It is an analogy of the main door of your home.

Therefore, you need to secure the lock screen on Galaxy S21 so that only you can “unlock” it. You should set up a screen lock (PIN, password, or pattern) to lock down … Read the rest

How to use navigation gestures on Galaxy S21?

Last updated on: November 14, 2023

how to use navigation gestures on Galaxy S2You can use navigation gestures instead of the default navigation buttons on Galaxy S21.

In fact, Galaxy S21 offers two sets of navigation gestures, and you can choose any of them and switch between them (or switch back to navigation buttons if you want) at any time.

This Galaxy S21 how-to guide explains the two sets of navigation gestures on Galaxy S21, how to use them, and how to switch between navigation gestures and navigation buttons on Galaxy S21.

Navigation gestures are identical n all Galaxy S21 models. So this guide applies to Galaxy S21, S21+, and S21 Ultra.

Navigation buttons vs navigation gestures: who needs what?

Prior to Android 9, Android uses 3 navigation buttons (Back, Home, Recents/Overview) for you to navigate through pages (panels) and apps.

Google introduced the two-button navigation gestures in Android 9 (Android Pie). Full-screen navigation gestures were introduced in Android 10.

In Google’s view, the future is navigation gestures, not navigation buttons. It is a natural evolution from physical navigation buttons (like this one) to software (on-screen) navigation buttons, and now to navigation gestures.

Of course, it is merely Google’s perspective. Many Android users still prefer the old-school navigation buttons … Read the rest

How to use touchscreen gestures on Galaxy S21?

Last updated on: October 15, 2021

use touchscreen gestures on Galaxy S21You cannot skip touchscreen gestures when using Galaxy S21.  Even if you choose to use navigation buttons, you still need to use the touchscreen gestures for many operations on Galaxy S21.

This Galaxy S21 how-to guide explains the 8 supported touchscreen gestures on Galaxy S21 and demonstrates how to use them. Some advice on taking care of the Galaxy S21 screen is also covered.

This guide applies to all models and variants of Galaxy S21 phones because the touchscreen gestures are a common software feature on these phones.

What are the supported touchscreen gestures on Galaxy S21?

Galaxy S21 supports 8 touchscreen gestures:

  1. Tap (single tap).
  2. Double-tap.
  3. Triple tap.
  4. Long tap (tap and hold).
  5. Swipe (slide).
  6. Drag.
  7. Pinch.
  8. Spread.

These are touchscreen gestures supported at the system level. Some apps may support other fancy gestures.

Tap (single tap)

Tapping is the simplest and most frequently used touchscreen gesture on Galaxy S21.

You touch (tap) somewhere on the Galaxy S21 screen once, then move your finger away from the screen, as illustrated below.

Galaxy S21 touchscreen gestures: Tap (single tap)

When using DeX with a mouse, the corresponding operation is  “click”.

The action of the tapping gesture depends on the object you touched and the app you … Read the rest

How to use and customize Galaxy S21 navigation buttons and navigation bar?

Last updated on: January 25, 2023

use and customize Galaxy S21 navigation buttons and navigation barSamsung offers both Galaxy S21 navigation buttons and navigation gestures on Galaxy S21. So, you choose what you like to navigate through different pages and apps.

This Galaxy S21 how-to guide explains the options for Galaxy S21 navigation buttons and navigation gestures, shows you how to enable and use navigation buttons on Galaxy S21, and how to customize the Galaxy S21 navigation buttons layout.

The navigation system options on all Galaxy S21 phones are identical. So this guide applies to Galaxy S21, S21+, and S21 Ultra.

Galaxy S21 navigation buttons vs navigation gestures

Traditionally, Android adopts 3 navigation buttons. Google ditched the Overview (Recents) button and switched to navigation gestures for the stock Android since Android Pie (Android 9.0).  And in Android 10, the Home button and Back button were removed, and navigation gestures fully replaced the buttons.

Samsung adopted a conservative approach. They offered both navigation buttons and two types of navigation gestures on Galaxy S21. So, all owners can own choices.

On Galaxy S21, you can choose one of the following three navigation types:

  1. Navigation buttons.
  2. Swiping from the bottom (Samsung style).
  3. Swiping from sides and bottom (similar to stock Android 10 and
… Read the rest

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Android 12 Android 13 Android 14 app icon app shortcut Apps screen camera camera app camera modes camera quick launch charge Galaxy S21 battery fingerprint scanner Galaxy S21 Galaxy S21 camera settings Galaxy S21 Home screen Galaxy S21 Home screen edit mode Galaxy S21 layout Galaxy S21 LED Wallet Cover Galaxy S21 lock screen Galaxy S21 quick settings Galaxy S21 quick settings panel Galaxy S21 settings Galaxy S21 Smart LED View Home screen layout of Galaxy S21 lock screen long tapping navigation bar navigation button navigation gestures NavStar notification notification icon One UI 6 power off power off menu reboot Galaxy S21 Side key status bar status icon touchscreen gesture User Manual wallpaper widget wireless charging

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Samsung Galaxy S21 how-to guides, user manuals, tips and tricks for Samsung Galaxy S21, Galaxy S21+, Galaxy S21 FE and Galaxy S21 Ultra owners.
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