Switch Phone Number for a Call on iPhone XS, XS Max and iPhone XR

  1. On main screen, tap (Phone)
  2. Tap (Keypad) 
  3. Notice at the top now is (Primary) to make call, if want to switch it, tap this
  4. Choose line to make call (per existing Cellular plan), choose (Secondary)
  5. Line for outgoing call will be changed to (Secondary)
  6. Test making call by using “Secondary”
  7. After hanging up, at (Recent) tab will have outgoing call name and “S”, this stands for Secondary

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