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Samsung
Galaxy S21 Ultra 5G
Calls, contacts & calendar
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 receive messages on my MessageBank®
I can't check my MessageBank®
I can't make voice calls
I can't receive any voice calls
Network
Select network
Select network mode
Turn flight mode on or off
Select dual SIM settings
Making calls
Call phone number
Answer a call
Turn call waiting on or off
Turn your own caller identification on or off
Call a contact in your address book
Contacts
Create contact
Merge identical contacts
Back up contacts to your SIM and your phone
Copy contacts from social networks and email accounts
MessageBank®
Save MessageBank® number
Divert calls to MessageBank®
Call MessageBank®
Cancel all diverts
Call restrictions
Turn call barring on or off