Here’s how to designate your line with us as the default line on iOS:
- From your Home screen, navigate to Settings > Cellular.
If you can’t locate the Settings app, swipe left to access the App Library.
- Tap “Default Voice Line.”
(Note: This option is available only when using Dual SIM.)
- Tap “Default Voice Line” again.
- Choose the line (e.g., Primary, Secondary, etc.).
The selected line will be marked with a checkmark.
Following these steps will set your line with us as your default line.