Samsung Galaxy S21
![f-2e656601-c0e6-4903-8b14-ba442e5576f1](http://wmstatic.global.ssl.fastly.net/ml/101224-f-2e656601-c0e6-4903-8b14-ba442e5576f1.png?width=140&height=200)
![f-1ec9edfb-3f30-4d72-a4be-a3c86e530c42](http://wmstatic.global.ssl.fastly.net/ml/101224-f-1ec9edfb-3f30-4d72-a4be-a3c86e530c42.png?width=140&height=200)
![f-8fb727c3-7b58-4c52-8e49-d92f0af8f82a](http://wmstatic.global.ssl.fastly.net/ml/101224-f-8fb727c3-7b58-4c52-8e49-d92f0af8f82a.png?width=140&height=200)
![f-01716f84-c1ed-42f0-9a1c-8b6da44abbb4](http://wmstatic.global.ssl.fastly.net/ml/101224-f-01716f84-c1ed-42f0-9a1c-8b6da44abbb4.png?width=140&height=200)
![f-42d8e4d0-fd79-4112-bae4-c9c335a3d192](http://wmstatic.global.ssl.fastly.net/ml/101224-f-42d8e4d0-fd79-4112-bae4-c9c335a3d192.png?width=140&height=200)
![f-fc9353fb-f0df-4b86-a026-3bae438f3974](http://wmstatic.global.ssl.fastly.net/ml/101224-f-fc9353fb-f0df-4b86-a026-3bae438f3974.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/101224-f-4f73f480-9f98-4a94-8b07-6a2eb0b3b093.png?width=232&height=514)
![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/101224-f-4f73f480-9f98-4a94-8b07-6a2eb0b3b093.png?width=344&height=768)
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/101224-f-77d72a60-0d86-4165-85a3-2b12fca4ad63.png?width=232&height=514)
![Press the settings icon. Press the settings icon.](http://wmstatic.global.ssl.fastly.net/ml/101224-f-77d72a60-0d86-4165-85a3-2b12fca4ad63.png?width=344&height=768)
Press the settings icon.
![Press Connections. Press Connections.](http://wmstatic.global.ssl.fastly.net/ml/101224-f-1698813e-d19c-42d2-aabe-038a76d1a048.png?width=232&height=514)
![Press Connections. Press Connections.](http://wmstatic.global.ssl.fastly.net/ml/101224-f-1698813e-d19c-42d2-aabe-038a76d1a048.png?width=344&height=768)
Press Connections.
![Press SIM card manager. Press SIM card manager.](http://wmstatic.global.ssl.fastly.net/ml/101224-f-abc4fdbe-bf8f-45d1-9667-4d84f238fb90.png?width=232&height=514)
![Press SIM card manager. Press SIM card manager.](http://wmstatic.global.ssl.fastly.net/ml/101224-f-abc4fdbe-bf8f-45d1-9667-4d84f238fb90.png?width=344&height=768)
Press SIM card manager.
![Press the required SIM. Press the required SIM.](http://wmstatic.global.ssl.fastly.net/ml/101224-f-a96b1f49-090a-4c45-a6b2-bb94dc0dd258.png?width=232&height=514)
![Press the required SIM. Press the required SIM.](http://wmstatic.global.ssl.fastly.net/ml/101224-f-a96b1f49-090a-4c45-a6b2-bb94dc0dd258.png?width=344&height=768)
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/101224-f-6fc419d0-cd66-4572-85f5-f16ff03b3ae1.png?width=232&height=514)
![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/101224-f-6fc419d0-cd66-4572-85f5-f16ff03b3ae1.png?width=344&height=768)
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/101224-f-6fc419d0-cd66-4572-85f5-f16ff03b3ae1.png?width=232&height=514)
![Press the Return key. Press the Return key.](http://wmstatic.global.ssl.fastly.net/ml/101224-f-6fc419d0-cd66-4572-85f5-f16ff03b3ae1.png?width=344&height=768)
Press the Return key.
![Press Calls. Press Calls.](http://wmstatic.global.ssl.fastly.net/ml/101224-f-a96b1f49-090a-4c45-a6b2-bb94dc0dd258.png?width=232&height=514)
![Press Calls. Press Calls.](http://wmstatic.global.ssl.fastly.net/ml/101224-f-a96b1f49-090a-4c45-a6b2-bb94dc0dd258.png?width=344&height=768)
Press Calls.
![Press the required setting. Press the required setting.](http://wmstatic.global.ssl.fastly.net/ml/101224-f-488cbbfa-f262-4953-b394-8121498e0662.png?width=232&height=514)
![Press the required setting. Press the required setting.](http://wmstatic.global.ssl.fastly.net/ml/101224-f-488cbbfa-f262-4953-b394-8121498e0662.png?width=344&height=768)
Press the required setting.
![Press Messages. Press Messages.](http://wmstatic.global.ssl.fastly.net/ml/101224-f-a96b1f49-090a-4c45-a6b2-bb94dc0dd258.png?width=232&height=514)
![Press Messages. Press Messages.](http://wmstatic.global.ssl.fastly.net/ml/101224-f-a96b1f49-090a-4c45-a6b2-bb94dc0dd258.png?width=344&height=768)
Press Messages.
![Press the required SIM. Press the required SIM.](http://wmstatic.global.ssl.fastly.net/ml/101224-f-dd307c39-4d76-49d5-a5b0-b99b1ca43d8d.png?width=232&height=514)
![Press the required SIM. Press the required SIM.](http://wmstatic.global.ssl.fastly.net/ml/101224-f-dd307c39-4d76-49d5-a5b0-b99b1ca43d8d.png?width=344&height=768)
Press the required SIM.
![Press Mobile data. Press Mobile data.](http://wmstatic.global.ssl.fastly.net/ml/101224-f-a96b1f49-090a-4c45-a6b2-bb94dc0dd258.png?width=232&height=514)
![Press Mobile data. Press Mobile data.](http://wmstatic.global.ssl.fastly.net/ml/101224-f-a96b1f49-090a-4c45-a6b2-bb94dc0dd258.png?width=344&height=768)
Press Mobile data.
![Press the required setting. Press the required setting.](http://wmstatic.global.ssl.fastly.net/ml/101224-f-44afe0d7-eaee-4e13-a7f1-43f1c7c803f7.png?width=232&height=514)
![Press the required setting. Press the required setting.](http://wmstatic.global.ssl.fastly.net/ml/101224-f-44afe0d7-eaee-4e13-a7f1-43f1c7c803f7.png?width=344&height=768)
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/101224-f-a96b1f49-090a-4c45-a6b2-bb94dc0dd258.png?width=232&height=514)
![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/101224-f-a96b1f49-090a-4c45-a6b2-bb94dc0dd258.png?width=344&height=768)
Press the Home key to return to the home screen.