This is our ultimate Samsung Galaxy S21 user guide. If you ever run into any issues, we have Galaxy S21 troubleshooting tips for just about any issues under the sun. We also have recommendations for accessories, tips, and tricks that will maximize your Galaxy S21 user experience.
Getting Started
- How to Set up and Manage Bixby Settings on Galaxy S21
- How to use Galaxy S21 Wireless PowerShare
- How to Create a Group Contact on Galaxy S21
- How to Block or Unblock a Phone Number on Galaxy S21
- How to Sync Account Contacts on Galaxy S21
Settings
- How to Activate and Set Up Secure Folder on Samsung Galaxy S21 (OneUI 4.0)
- How to Disable Samsung Keyboard Auto-Capitalize Feature on Galaxy S21 One UI 4.0
- How to Enable Temporary Mute on Samsung Galaxy S21 (One UI 4.0)
- How to Enable Adapt Sound Feature on Samsung Galaxy S21 (One UI 4.0)
- How to Enable Media Volume Limit on Samsung Galaxy S21 (One UI 4.0)
- How to Set Up and Use Private Share on Samsung Galaxy S21 (One UI 4.0)
- How to Set Up and Manage DND Settings on Samsung Galaxy S21 (One UI 4.0)
- How to Opt Out of Ads Personalization on Samsung Galaxy S21 | One UI 4.0
- How to Change Galaxy S21 Screenshot Format | JPG or PNG
- How to Download New Font on Samsung Galaxy S21 | Galaxy Store Fonts
- How to Activate Samsung Galaxy S21 Bedtime Mode | Android 12
- How to Enable Strict Mode on Samsung Galaxy S21 | Android 12
- How to Create New Folder on Samsung Galaxy S21 My Files | Android 12
- How to Move and Copy Files on Samsung Galaxy S21 | Android 12
- How to Activate Samsung Galaxy S21 Lift to Wake Gesture | Display On when Pick Up
- How to Access Hidden Files and Folders on Samsung Galaxy S21 | Android 12
- How to Enable Samsung Galaxy S21 Eye Comfort Shield Feature | One UI 3.1 Blue Light Filter
- How to Force Stop App on Samsung Galaxy S21 | Kill App Processes
- How to Enable USB Debugging on Samsung Galaxy S21 | One UI 3/Android 11
- How To Enable Power Saving Mode on Samsung Galaxy S21
- What to do if your Samsung Galaxy S21 Won’t Connect To Wi-Fi Network
- How to Enable Developer Options on Samsung Galaxy S21 | Android 11 Developer Mode
- How To Display Battery Percentage on Samsung Galaxy S21 | Android 11
- How to Enable Voice Commands on Samsung Galaxy S21 Camera App | Hands-free Image & Video Capture
- How to Increase Touch Sensitivity on Samsung Galaxy S21 | Android 11
- How to Link Galaxy S21 and Windows 11 using Your Phone Companion and Link to Windows
- How to Customize Galaxy S21 Home Screen | New Wallpapers, Themes, Icons & Widgets
- How to Change Samsung Galaxy S21 Ringtone with Downloaded Mp3/Mp4 File
- How to Share Galaxy S21 Wi-Fi Internet via Hotspot and Bluetooth Tethering | Android 12
- How to Register or Add Fingerprint on Samsung Galaxy S21 | Fingerprint Unlock
- How to Change Default Clock Style on Galaxy S21 | Customizing Clock Widget
- How to Enable Disable Absolute Volume on Galaxy S21
- How to Take a Screenshot on Samsung Galaxy S21
- How to Hide Files on Samsung Galaxy S21 (Android 12) without using Secure Folder
- Samsung Galaxy S21 Custom Fonts | Changing Font Size and Font Style
- How to Check and Install Galaxy S21 Updates
- How to Automatically Delete Old Messages on Galaxy S21
- How to Enable and Disable Automatic Updates on Galaxy S21
- How to set up text notification on Galaxy S21
- How to view or edit Galaxy S21 Message Center Number
- How to activate Find My Mobile Remote Control on Galaxy S21
- How to Get App Update Notifications on Galaxy S21 Play Store
- How to Adjust Galaxy S21 Screen Timeout and Brightness
- How To Enable Power Saving Mode on Samsung Galaxy S21
- How to Manage Data Usage on Galaxy S21
- How To Display Battery Percentage on Samsung Galaxy S21
- How to Manage Galaxy S21 Internal Memory Usage
- How To Access Developer Options And Enable USB Debugging On Galaxy S21
- How to Manage and Change Galaxy S21 App Permissions
- How To Activate Developer Mode On Galaxy S21
- How to Create a Reminder with Galaxy S21 Calendar
- How to Assign a Ringtone to a Contact on Galaxy S21
- How to Change the Default Language on Galaxy S21
- How to enable Parental controls and Set Content Restrictions on Galaxy S21 Play Store
- How To Use Galaxy S21 Text Editing Keyboard Feature
Home Screen
- How to use Multi Window on Galaxy S21
- How to Adjust or Change the Galaxy S21 Font Size
- How to Change the Default Screenshot Format on Galaxy S21
- How to Activate and Use Galaxy S21 One-handed Mode
- How to Change and Manage Galaxy S21 On-Screen Keyboard
- How To Change Galaxy S21 Keyboard Theme
- How To Improve Touchscreen Sensitivity On Galaxy S21
- How To Change Galaxy S21 Refresh Rate For Better Motion Smoothness
- How to Activate Galaxy S21 Blue Light Filter
- How to Add and Change Lock Screen Shortcuts on Galaxy S21
- How to Customize Galaxy S21 Themes with stock Galaxy Themes
Resets
- How to Reset Advertising ID on Samsung Galaxy S21 (One UI 4.0)
- How to Reset All Settings on Samsung Galaxy S21 without Deleting User Data
- How to Reset App Preferences on Samsung Galaxy S21 | Android 12
- How to Reset Accessibility Settings on Samsung Galaxy S21
- How to Reset Keyboard Settings on Samsung Galaxy S21 | Restore Default Keyboard Options
- How to Reset Network Settings on Samsung Galaxy S21 | Restore Network Defaults
- How to Reset Camera Settings on Samsung Galaxy S21 | Restore Camera Defaults
- How To Reset A Frozen Samsung Galaxy S21
- How To Do Forced Restart on Samsung Galaxy S21
- Samsung Galaxy S21 Wipe Cache Partition: What it does and how it’s done?
- How To Factory Reset Galaxy S21
- How To Shutdown And Restart Galaxy S21
- How To Reset Apps On Galaxy S21
- How To Reset Galaxy S21 Settings Without Deleting Files And Apps
- How To Reset Network Settings On Galaxy S21
- How To Reset Accessibility Settings On Galaxy S21
- How To Auto Restart Galaxy S21
- How To Wipe Cache Partition On Galaxy S21
Wireless Connections
- How to Connect Galaxy S21 to Wi-Fi Network
- How to connect Galaxy S21 to the Internet using Mobile Data
- How to pair Galaxy S21 with Bluetooth devices [Easy Steps]
- How to Set Up Galaxy S21 Mobile Hotspot and share Wi-Fi connection
- How to Set up Mobile Hotspot on Galaxy S21
- How to Reset Access Point Names (APN) Settings on Galaxy S21
- How to Manually Configure or Change Galaxy S21 Network Mode
Accounts & Security
- How To Add And Remove Samsung Account On Galaxy S21
- How to Send Email with Attachment on Galaxy S21 (Gmail)
- How to Add a Google Account to Outlook on Galaxy S21
- How to Set Up Corporate Email on Galaxy S21
- How to Set up a Secure Screen Lock on Galaxy S21 [PIN unlock]
- How to Use Biometrics to Secure your Galaxy S21 [Biometrics Authentication]
- How to Set Up Samsung Health Profile on Galaxy S21
- Galaxy S21 Lockdown Mode: How To Access And Enable It?
- How to Authenticate Play Store Purchases on Galaxy S21
- How to Create a Secure Folder on Galaxy S21
Applications
- How to Put Unused Apps to Sleep on Samsung Galaxy S21 (OneUI 4.0)
- How to Clear App Cache and Data on Samsung Galaxy S21 | Android 12
- How to Force Stop Apps on Galaxy S21 | Kill App Processes
- How to Clear App Cache and Data on Galaxy S21
- How to Download and Install New Software Update on Samsung Galaxy S21 | OTA updates
- How to Reset App Preferences on Samsung Galaxy S21
- How to Force Stop an App on Samsung Galaxy S21 | Kill App Processes
- How to Change Google Drive Theme on Galaxy S21 [Dark Mode]
- How to Clear Google Drive Cache on Galaxy S21
- How to Restrict Mature Videos on Galaxy S21 YouTube app [Restricted Mode]
- How to Add New Phone Number on Galaxy S21 Skype App
- How to Start or Make Skype Echo Free Test Call on Galaxy S21
- How to Manage and Edit your Skype Profile Information on Galaxy S21
- How to view your Skype Profile URL on Galaxy S21
- How to Share your Skype Profile on Galaxy S21
- How to Create a New YouTube Playlist on Galaxy S21
- How to manage Facebook Video Settings on Galaxy S21
- How to Delete All YouTube Downloads on Galaxy S21
- How to Invite People to a Zoom Meeting on Galaxy S21
- How to Manage YouTube Location Settings on Galaxy S21
- How to change Facebook account name and username on Galaxy S21
- How to Automatically Record Zoom Meetings Galaxy S21
- How to add and remove phone number on Facebook Galaxy S21
- How to Manage YouTube Channel Notifications on Galaxy S21
- How to Customize Hangouts Invites on Galaxy S21
Samsung Galaxy S21 Tips & Tricks
Hardware
- How To Screen Mirror Galaxy S21 To TV Using Smart View
- How To Mirror Galaxy S21 Screen To PC Monitor Using Cable
- How to Link your Galaxy S21 to a Windows computer/laptop
- How to Turn Off Galaxy S21 When the Touch Screen is not Responding
- How Reset Galaxy S21 Using Hardware Keys
Software
- How to fix Galaxy S21 Network Connection Errors
- How to fix Galaxy S21 System Settings errors [Reset All Settings]
- How to Hide Photos on Galaxy S21 using Secure Folder
- How to Change the File Size of Pictures and Videos on Galaxy S21
- How to transfer files from old Samsung smartphone to Galaxy S21 (wired and wireless connection)
- How to Disable Galaxy S21 Wireless Communications All At Once
- How to Reset Galaxy S21 Without Deleting Apps, Files and Data
- Unlock Galaxy S21 Without Entering Screen Lock Security
Applications
- How to Register or Add Fingerprint on Galaxy S21 | Biometrics Security
- How to Import and Export Contacts on Galaxy S21
- How To Connect A PS4 Wireless Controller To Galaxy S21
- How to Block Third-Party Cookies on Galaxy S21 (Chrome browser)
- How to Remove Ad pop-ups and Malware on Galaxy S21
- How to Block Ads on Galaxy S21 Chrome browser
- How to Identify Spam and Scam callers on Galaxy S21
- How to Add Mobile Signature on your Galaxy S21 Gmail Account
- How to activate Facebook Face Recognition on Galaxy S21
- How to sync Outlook and your Facebook Calendar on Galaxy S21
- Samsung Galaxy S21 Troubleshooting Manual
Power
- What to do If your Samsung Galaxy S21 Turned Off By Itself, Won’t Turn Back On
- How To Fix The Samsung Galaxy S21 Black Screen of Death Issue
- How To Fix A Samsung Galaxy S21 That Won’t Turn On
- What To Do About The Moisture Detected Error on Galaxy S21
- Galaxy S21 is not charging via wired charger [Easy Fix]
- How to fix Galaxy S21 not fast charging issue
Internet & Network
- Samsung Galaxy S21 Wi-Fi Connection Keeps Dropping? Here’s how you fix it.
- What To Do If Samsung Galaxy S21 Mobile Data Not Working
- How to Share Galaxy S21 Wi-Fi Internet via Hotspot and Bluetooth Tethering
- How To Fix It If Samsung Galaxy S21 Won’t Connect To Wi-Fi Network
- How To Fix Samsung Galaxy S21 Slow Internet Connection Issue
- What To Do If Galaxy S21 Keeps Losing Signal
- How to fix Galaxy S21 Bluetooth issues, pairing errors
- Galaxy S21 No 4G LTE signal [Easy Fixes]
- How to fix Galaxy S21 No SIM card error [Quick solutions]
- Galaxy S21 Drops Wi-Fi Connection. Here’s The Fix!
- Galaxy S21 Mobile Data Not Working. Here’s The Fix!
- What To Do If Galaxy S21 Won’t Connect To Wi-Fi Network
Camera
- How To Fix It If Samsung Galaxy S21 Camera Keeps Crashing
- Galaxy S21 Camera Not Working? Here’s The Fix!
- How To Take A Screenshot On Galaxy S21
- How to Reset and Restore Default Camera Settings on Galaxy S21
Operating System
- Samsung Galaxy S21 Randomly Freezes And Lags After An Update | Quick Fixes
- What to do if your Galaxy S21 keeps rebooting after an update
- Samsung Galaxy S21 Started Running Slow After An Update
- How To Fix A Samsung Galaxy S21 That Keeps Lagging
- How To Fix the Samsung Galaxy S21 Screen Flickering Issue
- Galaxy S21 is running slow? Here’s what to do!
- Galaxy S21 Stuck On Logo And Won’t Boot Up
- My Galaxy S21 Keeps Rebooting. Here’s The Fix!
- My Galaxy S21 Keeps Freezing. Here’s The Fix!
- Galaxy S21 won’t update via OTA [Quick Solutions]
- Galaxy S21 Randomly Lags? Here’s The Fix!
- How To Fix Galaxy S21 Black Screen Of Death Issue
- My Galaxy S21 Is Frozen. Here’s How To Reset It!
- My Galaxy S21 Became Sluggish. Here’s The Fix!
Calls & Texts
- How to Change Call Display on Samsung Galaxy S21 (OneUI 4.0)
- How to Schedule SMS Message on Samsung Galaxy S21 (OneUI 4.0)
- How to Enable SMS delivery reports on Samsung Galaxy S21 (OneUI 4.0)
- How to Enable Send SOS Messages on Samsung Galaxy S21 (OneUI 4.0)
- How to Show Contact Info on Samsung Galaxy S21 Lock Screen (One UI 4.0)
- Samsung Galaxy S21 Keeps Disconnecting From Wi-Fi Network | Easy Fixes
- What to do if your Samsung Galaxy S21 Keeps Losing Signal (Cellular)
- How to Fix Samsung Galaxy S21 Slow Internet Connection Issue
- How To Fix Samsung Galaxy S21 Mobile Data That’s Not Working
- How To Fix A Samsung Galaxy S21 That Keeps Losing Wi-Fi Signal
- How To Fix It If Samsung Galaxy S21 Won’t Send MMS
- How To Fix It If Samsung Galaxy S21 Can’t Send SMS or Text Messages
- Samsung Galaxy S21 Can’t Receive Calls? Here’s how to fix it.
- How To Fix It If Your Samsung Galaxy S21 Can’t Receive Text Messages
- Calls keep Dropping on Galaxy S21 [How to fix it]
- Galaxy S21 Can’t Receive Text From iPhone. Here’s The Fix!
- How to Hide and View Conversations on Galaxy S21 Messenger
- How to Send Messages on Galaxy S21 as Group Conversation
Audio
- What To Do If Samsung Galaxy S21 Doesn’t Play Audio Through Its Speakers
- Galaxy S21 problem on Low Audio during calls [Quick solutions]
- No sound and other audio issues
- Loudspeaker doesn’t have any sound
- Bluetooth headset has no sound
- Notifications don’t play
Applications
- How to Show Link Previews on Samsung Galaxy S21 Messages (OneUI 4.0)
- Samsung (OneUI 4.0) Galaxy S21 Gallery Keeps Stopping? Here are the solutions!
- What to do if the Galaxy S21 Messages Keeps Stopping | Quick Fixes
- Samsung Galaxy S21 Phone Keeps Crashing? Here are the solutions
- Facebook Keeps Crashing on Galaxy S21? Here are the solutions
- Samsung Galaxy S21 Camera Keeps Crashing? Here’s how you fix it.
- Facebook Does Not Update The Timeline on Galaxy S21
- How To Fix It If Galaxy S21 Messages Keeps Stopping
- How To Fix It If Samsung Galaxy S21 Gallery Keeps Stopping
- How To Fix It If Twitter Keeps Stopping on Galaxy S21
- Facebook Crashing on Galaxy S21? Here are the solutions.
- How to Clear Browsing Data on Galaxy S21 (Chrome)
- How to use Turn-by-Turn Navigation with Galaxy S21 Google Maps
- How To Put An App To Sleep On Galaxy S21
- How To Fix Instagram Crashes On Galaxy S21
- How to Retrieve Deleted Facebook Messages on Galaxy S21
- How to view and manage Facebook language settings on Galaxy S21
- Facebook Keeps Crashing On Galaxy S21. Here’s The Fix!
- How to Block Users, Messages, Apps, App Invites on Galaxy S21 Facebook app
- How To Fix Messenger That Keeps Closing on Samsung Galaxy S21
- Cannot Upload Photos to Facebook from Galaxy S21 [Quick Fixes]
- How to deal with Skype Echo Problem on Galaxy S21
- How to fix ‘500 Internal Server Error’ on YouTube App Galaxy S21
Screen
- Galaxy S21 Fingerprint Scanner is not working. Here’s how to fix it!
- Galaxy S21 Auto-Rotate Not Working [How to Fix it]
- How To Fix Slow Or Unresponsive Galaxy S21 Touchscreen
- How To Fix The Samsung Galaxy S21 Screen Flickering Issue
Storage
- How To Transfer Files From Galaxy S21 To Mac Using Android File Transfer
- How to Encrypt and Decrypt SD Card on Galaxy S21
- Unable to read mounted SD card
- Some apps in SD card not working
- How to free up some storage space
- Server storage full, unable to write on SD card
