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Text message being sent to landline rather than mobile number

Hello. I have an iPhone 12. Since the version 15 update came out, I've had a problem with text messages being sent to my contact's landline number rather than their mobile number; I have to hold on their name in the contact list to choose their cell number. How do I get the phone to pick the cell number by default?

iPhone 12

Posted on Jan 6, 2022 8:24 PM

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Posted on Jan 7, 2022 8:42 AM

My question had nothing to do with business or personal lines, and I don't see any "last used" or "always used" in my contacts list descriptions. My issue is with starting messages from the Messages app or the Share link in other apps.

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3 replies

Jan 6, 2022 10:28 PM in response to WilliamH2

There is a difference between "Last Used" and "Always Use"


if you have selected a Line for a Contact, Say Line B as "Always Use"

and If that contact sends you a text using Line A then if you reply to that contact using the received message in the Message App as a continuation of the conversation then the Contact will be assigned as "Last Used"


Always start a conversation from the Contacts App if you want to keep Business and Personal lines separate.


If you start the conversation from the old thread then you cannot change it. Start a new conversation from Contacts App. Here you can change the number as well as the Line. As shown in the GIF below

Text message being sent to landline rather than mobile number

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