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Samsung Galaxy S21+ 5G
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I can't make voice calls
This troubleshooting guide will take you through a number of possible causes to help you find a solution to your problem.
Possible cause 11:
The selected network mode is not available: Turn on automatic network mode selection.
List view
1. Find "Network mode ‹SIM›"
Slide two fingers downwards starting from the top the screen.
Tap the settings icon.
Tap Connections.
Tap Mobile networks.
Tap Network mode ‹SIM›.
2. Select network mode
Tap the required network mode.
There may be different network modes available depending on where you are. If you set your mobile phone to the fastest network mode, it will always find the network with the highest data speed and best signal.
3. Return to the home screen
Tap the Home key to return to the home screen.
Step 1 of 7
Slide two fingers downwards starting from the top the screen.
Step 2 of 7
Tap the settings icon.
Step 3 of 7
Tap Connections.
Step 4 of 7
Tap Mobile networks.
Step 5 of 7
Tap Network mode ‹SIM›.
Step 6 of 7
Tap the required network mode.
Step 7 of 7
Tap the Home key to return to the home screen.
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