Help and support for
Samsung Galaxy S21 Ultra

Android 11.0

Most viewed guides

Turn roaming on or off

Set up your phone for internet

Restart your phone

Improve battery life

Choose topic for your Samsung Galaxy S21 Ultra

First steps

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

Activate eSIM on your phone

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

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

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 mode

Turn airplane mode on or off

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