Samsung Galaxy S21 Ultra
![f-646f8cbf-50e5-4dfa-aa94-eaa827c9e74f](http://wmstatic.global.ssl.fastly.net/ml/020724-f-646f8cbf-50e5-4dfa-aa94-eaa827c9e74f.png?width=140&height=200)
![f-f53045ad-2e18-472d-a60c-38c529b09004](http://wmstatic.global.ssl.fastly.net/ml/020724-f-f53045ad-2e18-472d-a60c-38c529b09004.png?width=140&height=200)
![f-748b4cde-3223-4c13-ae3a-63462ca92f0e](http://wmstatic.global.ssl.fastly.net/ml/020724-f-748b4cde-3223-4c13-ae3a-63462ca92f0e.png?width=140&height=200)
![f-c32d786b-a427-4c1d-a707-e500a4bc8001](http://wmstatic.global.ssl.fastly.net/ml/020724-f-c32d786b-a427-4c1d-a707-e500a4bc8001.png?width=140&height=200)
![f-6a2cdb09-d6dd-4565-a99b-dff3c3c94109](http://wmstatic.global.ssl.fastly.net/ml/020724-f-6a2cdb09-d6dd-4565-a99b-dff3c3c94109.png?width=140&height=200)
![f-f003af5f-47d0-4096-89bb-2dc1aa89d2c2](http://wmstatic.global.ssl.fastly.net/ml/020724-f-f003af5f-47d0-4096-89bb-2dc1aa89d2c2.png?width=140&height=200)
Selecting 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.
![Slide two fingers downwards starting from the top of the screen. Slide two fingers downwards starting from the top of the screen.](http://wmstatic.global.ssl.fastly.net/ml/020724-f-b046ae34-0c83-43a5-a7fe-d4a9539ce1cc.png?width=236&height=524)
![Slide two fingers downwards starting from the top of the screen. Slide two fingers downwards starting from the top of the screen.](http://wmstatic.global.ssl.fastly.net/ml/020724-f-b046ae34-0c83-43a5-a7fe-d4a9539ce1cc.png?width=350&height=776)
Slide two fingers downwards starting from the top of the screen.
![Press the settings icon. Press the settings icon.](http://wmstatic.global.ssl.fastly.net/ml/020724-f-3ac35714-e62f-4d66-837a-4ea3e6c9326f.png?width=236&height=524)
![Press the settings icon. Press the settings icon.](http://wmstatic.global.ssl.fastly.net/ml/020724-f-3ac35714-e62f-4d66-837a-4ea3e6c9326f.png?width=350&height=776)
Press the settings icon.
![Press Connections. Press Connections.](http://wmstatic.global.ssl.fastly.net/ml/020724-f-8b8c163e-b3c2-49f0-ae42-f33f8069b5c2.png?width=236&height=524)
![Press Connections. Press Connections.](http://wmstatic.global.ssl.fastly.net/ml/020724-f-8b8c163e-b3c2-49f0-ae42-f33f8069b5c2.png?width=350&height=776)
Press Connections.
![Press SIM card manager. Press SIM card manager.](http://wmstatic.global.ssl.fastly.net/ml/020724-f-bdf734f9-504a-47e0-abfa-a8d45e93ca15.png?width=236&height=524)
![Press SIM card manager. Press SIM card manager.](http://wmstatic.global.ssl.fastly.net/ml/020724-f-bdf734f9-504a-47e0-abfa-a8d45e93ca15.png?width=350&height=776)
Press SIM card manager.
![Press the required SIM. Press the required SIM.](http://wmstatic.global.ssl.fastly.net/ml/020724-f-ecec25fd-890f-46c6-8200-cce616367e7c.png?width=236&height=524)
![Press the required SIM. Press the required SIM.](http://wmstatic.global.ssl.fastly.net/ml/020724-f-ecec25fd-890f-46c6-8200-cce616367e7c.png?width=350&height=776)
Press the required SIM.
![Press the indicator to turn use of the SIM on or off. Press the indicator to turn use of the SIM on or off.](http://wmstatic.global.ssl.fastly.net/ml/020724-f-8913fb2a-ed8b-4a90-b456-2b9144d3ae17.png?width=236&height=524)
![Press the indicator to turn use of the SIM on or off. Press the indicator to turn use of the SIM on or off.](http://wmstatic.global.ssl.fastly.net/ml/020724-f-8913fb2a-ed8b-4a90-b456-2b9144d3ae17.png?width=350&height=776)
Press the indicator to turn use of the SIM on or off.
![Press the Return key. Press the Return key.](http://wmstatic.global.ssl.fastly.net/ml/020724-f-8913fb2a-ed8b-4a90-b456-2b9144d3ae17.png?width=236&height=524)
![Press the Return key. Press the Return key.](http://wmstatic.global.ssl.fastly.net/ml/020724-f-8913fb2a-ed8b-4a90-b456-2b9144d3ae17.png?width=350&height=776)
Press the Return key.
![Press Calls. Press Calls.](http://wmstatic.global.ssl.fastly.net/ml/020724-f-ecec25fd-890f-46c6-8200-cce616367e7c.png?width=236&height=524)
![Press Calls. Press Calls.](http://wmstatic.global.ssl.fastly.net/ml/020724-f-ecec25fd-890f-46c6-8200-cce616367e7c.png?width=350&height=776)
Press Calls.
![Press the required setting. Press the required setting.](http://wmstatic.global.ssl.fastly.net/ml/020724-f-1f3942aa-dd70-409c-a9a5-c6708bb662c3.png?width=236&height=524)
![Press the required setting. Press the required setting.](http://wmstatic.global.ssl.fastly.net/ml/020724-f-1f3942aa-dd70-409c-a9a5-c6708bb662c3.png?width=350&height=776)
Press the required setting.
![Press Messages. Press Messages.](http://wmstatic.global.ssl.fastly.net/ml/020724-f-ecec25fd-890f-46c6-8200-cce616367e7c.png?width=236&height=524)
![Press Messages. Press Messages.](http://wmstatic.global.ssl.fastly.net/ml/020724-f-ecec25fd-890f-46c6-8200-cce616367e7c.png?width=350&height=776)
Press Messages.
![Press the required SIM. Press the required SIM.](http://wmstatic.global.ssl.fastly.net/ml/020724-f-8f72d8f6-98b3-490a-aab3-82394e665133.png?width=236&height=524)
![Press the required SIM. Press the required SIM.](http://wmstatic.global.ssl.fastly.net/ml/020724-f-8f72d8f6-98b3-490a-aab3-82394e665133.png?width=350&height=776)
Press the required SIM.
![Press Mobile data. Press Mobile data.](http://wmstatic.global.ssl.fastly.net/ml/020724-f-ecec25fd-890f-46c6-8200-cce616367e7c.png?width=236&height=524)
![Press Mobile data. Press Mobile data.](http://wmstatic.global.ssl.fastly.net/ml/020724-f-ecec25fd-890f-46c6-8200-cce616367e7c.png?width=350&height=776)
Press Mobile data.
![Press the required setting. Press the required setting.](http://wmstatic.global.ssl.fastly.net/ml/020724-f-1f4379fe-89c7-4ace-ba52-5ab4cd548e26.png?width=236&height=524)
![Press the required setting. Press the required setting.](http://wmstatic.global.ssl.fastly.net/ml/020724-f-1f4379fe-89c7-4ace-ba52-5ab4cd548e26.png?width=350&height=776)
Press the required setting.
![Press the Home key to return to the home screen. Press the Home key to return to the home screen.](http://wmstatic.global.ssl.fastly.net/ml/020724-f-ecec25fd-890f-46c6-8200-cce616367e7c.png?width=236&height=524)
![Press the Home key to return to the home screen. Press the Home key to return to the home screen.](http://wmstatic.global.ssl.fastly.net/ml/020724-f-ecec25fd-890f-46c6-8200-cce616367e7c.png?width=350&height=776)
Press the Home key to return to the home screen.