SAMSUNG Galaxy S21 5G Smartphone User Guide

Samsung Care

SAMSUNG Galaxy S21 Series Care - Samsung Members
SAMSUNG Galaxy S21 Series Care - Settings

Samsung Premium CarePick the time and place and a team member will meet you to set up, troubleshoot, repair, or replace your product. Visit to enroll. Get to know your product Visit or download the Samsung Members app
Get to know your product Visit or download the

Contact us Questions? Visit for questions Get Support Call 1.800.SAMSUNG for support Service locations Find a  service location near you at
Learn more

Install your SIM card

Your SIM card may be pre-installed. If you need to install a SIM, follow these steps.

  1.  Locate the SIM card tray.
  2. Insert the SIM ejector pin into the hole on the card tray.
  3. Pull out the card tray.
  4. Insert the nano-SIM card in the tray with the gold contacts facing up.
SAMSUNG Galaxy S21 Series Care - SIM card

About your phone

SAMSUNG Galaxy S21 Series Care
Samsung account

Get the most out of your phone with your Samsung account.
You can sign in to your Samsung account, create an account, or sign up with your Google account. With your phone and your Samsung account, you can:

  • Use Samsung Pay
  • Schedule repairs
  • Back up your phone
  • Restore your phone and more

SAMSUNG Galaxy S21 5G Smartphone-SettingsSettings
SAMSUNG Galaxy S21 5G Smartphone-backupAccounts and backup
SAMSUNG Galaxy S21 5G Smartphone-accountsManage accounts
SAMSUNG Galaxy S21 5G Smartphone-Add accountAdd account
SAMSUNG Galaxy S21 5G Smartphone-Samsung accountSamsung account
For more information

Switching made simple

Whether you’re coming from an iOS or Android platform, you can easily transfer your data with Smart Switch.
Back up your old phone Back up your old phone using your favorite backup app.
Samsung Smart Switch

  1.  From your new Galaxy device, tap Settings > Accounts and backup > Bring data from the old device.
  2. Tap Receive data.
  3. Select your old device type and follow the prompts to connect your phones.

For more information
To download Smart Switch


From the Apps panel, tap SettingsSAMSUNG Galaxy S21 5G Smartphone-Settings to customize your phone.

SAMSUNG Galaxy S21 5G Smartphone-Customize

Essential apps

Samsung Pay
Introducing a better way to pay.

SAMSUNG Galaxy S21 5G Smartphone-Samsung PassSamsung Pass
Say goodbye to forgotten passwords.
Google Duo
Simple, high-quality video calling for smartphones, tablets, computers, and smart displays.
Google Photos
Store and back up your photos and videos.
Google Drive
Store, share and access your files from any device.
For more information
Google Duo:
Google Photos:
Google Drive:

  1. Wireless voice, data, and messaging services are compatible with most major U.S. GSM and CDMA networks. Visit for more information on your device. Support for certain features and services such as VoWiFi and hotspots vary by wireless service provider. See provider for compatibility details.

©2021 Samsung Electronics America, Inc. Samsung and Galaxy are both trademarks of Samsung Electronics Co., Ltd. Other company and product names mentioned herein may be trademarks of their respective owners. Screen images simulated. Appearance of the phone may vary. The images shown are for reference only. If you use a screen protector, make sure it allows for use of touch-screen features.

Documents / Resources

SAMSUNG Galaxy S21 5G Smartphone [pdf] User Guide
Galaxy S21 5G, Galaxy S21 5G, Galaxy S21 Ultra 5G, Galaxy Smartphone, Galaxy S21 5G Smartphone

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