You can set which card to use as the default card for voice call and messaging.
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Go to
Settings.
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Tap
SIM management.
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You can:
- Turn either card on or off.
- Tap a card name to rename it, enter your mobile number, and more.
- Choose which card to use for voice call and messaging. Or select the
Always ask option if you want apps to prompt you to choose a card whenever you make calls or send messages.