Contact phone number used when texting.
How can I tell which contact phone number my texts are going to? Is there a way I can control which number is used?
iPhone XR, iOS 16
Question marked as
If you have a contact with multiple mobile numbers, you can go to that person's contact entry in Contacts and select the one you want to use when you start a message. On the contact page, press and hold on the "message" icon then select the number you want to message from the pop-up list.