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Help and support for
Samsung Galaxy S21 Ultra

Android 11.0
Change the device
Samsung Galaxy S21 Ultra

Most viewed guides

Insert SIM
Restart your phone
Improve battery life
Change ringtone
Turn SIM lock on or off

Choose topic for your Samsung Galaxy S21 Ultra

First steps

Insert SIM
Turn your phone on and off
Charge your phone
Transfer content from another phone
Activate Google account on your phone

Security settings

Turn SIM lock on or off
Turn the lock code on or off

Sound and screen settings

Change ringtone
Turn silent mode on or off
Set date and time on your phone
Turn notifications on or off
Screenshot on your phone

eSIM

Transfer eSIM to your Samsung phone
Activate eSIM on your Samsung phone using a QR code

Calls and voicemail

Turn call waiting on or off
Turn your own caller ID on or off
Turn call barring on or off
Turn WiFi Calling on or off
Save voicemail number
Set up voicemail
Cancel all diverts

App management

Install apps from Google Play
Uninstall apps
Close apps
Use music player
Turn automatic app updates on or off
Clear your cache

Battery usage

Improve battery life

Restart

Restart your phone

Update and restoring factory settings

Update your phone
Factory reset your phone

Contacts

Create contact
Copy contacts between your SIM and your phone
Copy contacts from social networks and email accounts
Call a contact in your address book

Text messaging

Set up text messaging
Write and send text messages

Picture messaging

Set up picture messaging
Write and send picture messages

Email

Set up POP3 email
Set up IMAP email
Write and send emails

Network settings

Change network
Change network mode
Turn airplane mode on or off
Use dual SIM

Internet and WiFi

Set up your phone for internet
Connect to a WiFi network
Use hotspot on your phone
Turn automatic use of mobile data on or off

Data usage

Check data usage
Turn mobile data on or off
Turn roaming on or off

Bluetooth

Connect to a Bluetooth device

GPS

Turn GPS on or off

Backup and synchronisation

Back up pictures and videos to Google Drive
Sync content automatically
Transfer files between computer and phone