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Samsung Galaxy S21+ 5G
Android 11.0
Select dual SIM settings
When you insert two SIMs into your phone, you can make calls and send and receive messages from both SIMs. You can also select a default SIM for mobile data usage.
1. 1. Find "SIM card manager"
Slide two fingers downwards starting from the top of the screen.
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Press the settings icon.
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Press Connections.
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Press SIM card manager.
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2. 2. Turn use of SIM on or off
Press the required SIM.
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Press the indicator to turn use of the SIM on or off.
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Press the Return key.
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3. 3. Select default SIM for voice calls
Press Calls.
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Press the required setting.
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4. 4. Select default SIM for text messaging
Press Messages.
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Press the required SIM.
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5. 5. Select default SIM for mobile data
Press Mobile data.
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Press the required setting.
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6. 6. Return to the home screen
Press the Home key to return to the home screen.
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