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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

Galaxy S21 Smart LED View

How to use Galaxy S21 Smart Clear View Cover (S-View Flip Cover)?

Last updated on: September 26, 2022

How to use Galaxy S21 Smart Clear View Cover (S-View Flip Cover)Galaxy S21 Smart Clear View Cover (aka Galaxy S21 S-View Flip Cover in some regions) offers some unique features and decent protection for Galaxy S21. And it is “officially” designed and manufactured by Samsung.

This Galaxy S21 accessories guide explains the unique features and layout of the Galaxy S21 Smart Clear View Cover and demonstrates how to use the Galaxy S21 S-View Flip Cover, including attaching to or removing the cover from Galaxy S21 properly, adjusting the text orientation on the cover, accepting or rejecting calls without opening the cover, and controlling music play on the Galaxy S21 Smart Clear View Cover.

Due to the differences in size and camera lens in Galaxy S21, S21+, S21 Ultra, the Galaxy S21 Smart Clear View Cover is NOT interchangeable among these 3 phones. In other words, if your Galaxy S21 is a Galaxy S21+, you MUST buy the clear view cover for Galaxy S21+.  If it is Galaxy S21 Ultra, you need to buy the one for S21 Ultra.

What are the unique features of the Galaxy S21 Smart Clear View Cover (S-View Flip Cover)?

As an official Galaxy S21 accessory, compared to most third-party flip covers, Galaxy S21 Smart Clear … Read the rest

Master Meaning of Galaxy S21 Status Icons and Notification Icons

Last updated on: May 15, 2022

Meaning of Galaxy S21 Status Icons and Notification IconsYou need to understand the meaning of Galaxy S21 status icons and notification icons to use the phone properly and effectively.  Galaxy S21 status icons and notification icons can tell you rich information about the status of the phone status, phone health, and notification from individual apps.

This Galaxy S21 how-to guide first explains the differences between Galaxy S21 status icons and notification icons, then explains the meaning of Galaxy S21 status icons and notification icons you may find in Galaxy S21, S21+, and S21 Ultra.

Because Samsung uses slightly different icons in different regions or for some carriers, you may get Galaxy S21 status icons and notification icons that are different from those shown in this guide. This is normal. If you cannot figure out the meaning of those icons, you may share the screenshot on our FaceBook page so that the community can help you identify them.

Update: Android 12 update for Galaxy S21 (S20 and S10) brought a new camera and microphone indicators icon when the camera or microphone is accessed.

What is the difference between Galaxy S21 status icons and notification icons?

Like all other Android phones,  Galaxy S21 use the top part of the screen … 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 Galaxy S21 Home Screen?

Last updated on: October 15, 2021

Galaxy S21 Home screenGalaxy S21 Home screen is an essential part of your phone. It is a convenient location for you to open apps and check widgets.

This Galaxy S21 how-to guide explained what the Galaxy S21 Home screen is, why you need it, the meaning and usage of all items you may find on the Galaxy S21 Home screen, and how to use gestures on the Galaxy S21 Home screen.

Although Galaxy S21, S21+, and S21 Ultra differ in hardware configurations and a few software features, the home screen is identical on these 3 phones. So, this guide applies to all Galaxy S21 phones.

What is the Galaxy S21 Home screen? Why do you need it?

Galaxy S21 Home screen is the centre of the phone. You always start from the home screen after you unlock the phone (you SHOULD set up lock screen security for Galaxy S21). It is like your desktop on a PC.

Like on other Android phones, the Galaxy S21 Home screen can be used to hold frequently used apps, app folders, and widgets. You can also use it to pin files and pictures.

So, the Galaxy S21 Home screen can help you use the phone … Read the rest

Ultimate Guide for Using SIM Card on Galaxy S21

Last updated on: July 3, 2021

SIM Card on Galaxy S21You need to use a SIM card on Galaxy S21 if you want to use mobile data, receive SMS, or make voice calls through a cellular network.

This Galaxy S21 how-to guide explains everything you need to know about using a SIM card on Galaxy S21: the supported SIM card size, eSIM support, insert or change SIM cards, use two SIM cards, and check SIM card status on Galaxy S21.

This guide applies to all three Galaxy S21 models (Galaxy S21, S21+, and S21 Ultra). But in different regions or on different carriers, the mobile network features may slightly different.

What’s the supported SIM card size for Galaxy S21?

Galaxy S21 supports nano-SIM cards only (for the physical card) and eSIM (if your carrier supports it).

A nano-SIM is currently the smallest SIM card for mobile phones. Most phones released in the last few years adopted nano-SIM already.

So, you can use your existing SIM card if you migrated to Galaxy S21 from the following phones (just some examples):

  • Samsung Galaxy S6, S7, S8, S9, S10, S20 and all their variants.
  • Samsung Galaxy Note 5,  Note 7 FE, Note 8, Note 9, Note 10, Note 10+, Note 10 Lite, Note
… Read the rest

How to use LED icon editor to customize LED icons for Smart LED View Cover and LED Back Cover?

Last updated on: April 19, 2021

 use LED icon editor to customize LED icons for Smart LED View Cover and LED Back CoverYou can use the LED icon editor app to assign LED icons for individual contacts or apps, or create your own LED icons, if you use any of Samsung’s LED cover (e.g., Galaxy S21 Smart LED View Cover or the Galaxy S21 LED back cover).

This Galaxy S21 how-to guide shows you how to customize LED icons for individual contacts and apps, create your own LED icons in the LED icon editor, disconnect LED icons from some contacts and apps, and delete LED icons.

Please note, Galaxy S21 Smart LED View Cover are for all three models of Galaxy S21(Galaxy S21, S21+, and S21Ultra). But the LED Back Cover are not available Galaxy S21 Ultra.

What is the LED Icon Editor?

When you attach the Galaxy S21 Smart LED View (Wallet) Cover to the phone, the LED icon editor app will be activated immediately.

In other words, the app is pre-installed on all Galaxy S21 phones. But it is hidden unless a compatible LED cover is detected.

For Galaxy S21, there are two types of LED cover  compatible with the LED icon editor:

  • Galaxy S21 LED View (Wallet) Cover for Galaxy S21, S21+, and S21 Ultra.
  • Galaxy S21
… Read the rest

How to Use Galaxy S21 Smart LED View Cover (LED Wallet Cover)?

Last updated on: November 8, 2022

Use Galaxy S21 Smart LED View Cover (LED Wallet Cover)Galaxy S21 Smart LED View Cover (aka Galaxy S21 LED Wallet Cover in some regions) is one of the official accessories for Galaxy S21 with some exclusive features.

This Galaxy S21 accessories guide explains the unique features of the Galaxy S21 Smart LED View Cover, the layout of the LED View flip cover, how to attach and remove the LED Wallet Cover, how to answer or reject calls without opening the cover, how to control music playing on the cover, the difference between Smart LED View Cover and LED back cover. A concise review of Galaxy S21 Smart LED View Cover (LED Wallet Cover) highlights the pros and cons of the cover.

Due to the physical dimension differences of Galaxy S21, S21+, and S21 Ultra, you must use the cover for your model. For example, you cannot use the LED wallet case for Galaxy S21+ on Galaxy S21 Ultra. It simply does not fit.

What are the unique features of Galaxy S21 Smart LED View Cover (LED Wallet cover)?

First, Galaxy S21 Smart LED View Cover is a flip-cover for your GalaxyS21 (S21+, or S21Ultra). So, it offers all functions of a normal flip cover, e.g., back and front … Read the rest

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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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