1. Find "Mobile network"
Slide two fingers downwards starting from the top of the screen.
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Press the settings icon.
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Press Network & Internet.
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Press Mobile network.
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2. Turn use of SIM on or off
Press the required SIM.
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Press the upper indicator to turn use of the SIM on or off.
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3. Select default SIM for mobile data
Press Data preferences.
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Press the required SIM.
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4. Select default SIM for voice calls
Press Calls preference.
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Press the required setting.
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5. Select default SIM for text messaging
Press SMS preference.
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Press the required SIM.
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6. Return to the home screen
Slide your finger upwards starting from the bottom of the screen to return to the home screen.
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