Using another line on Apple 13
Why does my new Apple 13 say I have to use an alternate line?
iPhone XR, iOS 15
Question marked as
Dolores— wrote:
Why does my new Apple 13 say I have to use an alternate line?
Tap the “i” button next to the contact you want to call -> your default phone number -> alternate number. When manually dialing a phone number, tap the primary phone number and choose the alternate SIM
Make a call on iPhone - Apple Support
Using Dual SIM with an eSIM - Apple Support