Services & Apps
Dual SIM with an eSIM
Apple iPhone - Dual SIM with an eSIM - Switch Default Voice Line
Apple® iPhone® - Dual SIM with an eSIM - Switch Default Voice Line
The steps below apply to the following models:
iPhone XS / XS Max
The Default Voice Line is the primary line used for voice, SMS, Data, iMessage®, and FaceTime®.
From the Home screen, navigate:
Default Voice Line
Select the desired line (e.g., Primary, Secondary, etc.).
For additional Dual SIM info, check out this
Switch Designated iMessage / Facetime Number
Change Default Cellular Data Number