Click settings in main menu, choose SIM Management, as Picture 4.1
Click voice call, choose defaulted SIM card, as Picture 4.2
4.1-2 Video Call
Click settings in main menu, choose SIM Management, and click video
call, choose defaulted SIM card when makes video call, as Picture 4.3
4.1-3 Message
Click settings in main menu, choose SIM Management, click message,
Picture 4.1
Picture 4.2
Picture 4.3
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