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Samsung
Galaxy S21 Ultra 5G
Getting started
Samsung Galaxy S21 Ultra 5G
Android 11.0
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Getting started
Basic functions
Calls, contacts & calendar
Messaging & email
Internet & entertainment
Data & wireless
Popular apps
Troubleshooting
I can't turn on my phone
I can't start my phone
First use
Insert SIM
Charge the battery
Turn your phone on and off
Activate Google account on your phone
Transfer content from another phone
Using your phone
Guide to phone keys and sockets
List of screen icons
End running applications
Turn screen lock on or off
Restart your phone
Extend the battery life