Asus Zenfone Go User Manual page 41

Assigning a preferred Micro SIM card
Assign a Micro SIM card as your preferred SIM for SMS messages, calls and data services.
SIM card for data service
To assign a Micro SIM card for data service, tap Cellular data then select from SIM1 or SIM2.
SIM card for voice calls
When you make a call, your ASUS Phone automatically uses the preferred SIM card to connect the
call.
To assign a SIM card for voice calls, tap Voice call then tap the SIM that you want to use.
IMPORTANT! You can only use this feature if you make a call from your contacts list.
SIM card for SMS messages
To assign a Micro SIM card for SMS messages, tap SMS messages then tap the SIM that you want to
use.
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Chapter 4: Keeping in touch