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Messages working for some numbers, but not for others.

I have some contact numbers that will not transmit (others will) on Messages. Both my machines (Big Sur on M1 MBP and Catalina Intel iMac) refuse to send to these numbers, but they work fine on my iPhone all using the same Contacts number.


For others, Messages works fine on everything.

Posted on Nov 20, 2021 6:09 PM

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Question marked as Top-ranking reply

Posted on Nov 20, 2021 9:49 PM

Your iPhone and Mac need to be configured properly and jointly so the Mac can send SMS messages when you are sending to users who aren't on imessage (for instance Android phones).


iMessage checklist


  • iPhone and Mac both logged in to same Apple ID. Try logging off and logging on if necessary.
  • iPhone Settings => Messages shows iMessage as "on" (sometimes toggling this off and then on fixes some things)
  • iPhone Settings => Messages shows Send & Receive showing both phone number and email (Apple ID)
  • iPhone Settings => Messages shows Text Message Forwarding and your Mac is listed and shown as "on" there.
  • iPhone Settings => Messages shows Send as SMS "on" and MMS Messaging and Group Messaging both "on"
  • On the Mac: Messages => Preferences shows same and correct Apple ID and "You can be reached for messages at" indicates both phone number and Apple ID (email), and "start new conversations from" indicates the phone number.
2 replies
Question marked as Top-ranking reply

Nov 20, 2021 9:49 PM in response to Ric Carter

Your iPhone and Mac need to be configured properly and jointly so the Mac can send SMS messages when you are sending to users who aren't on imessage (for instance Android phones).


iMessage checklist


  • iPhone and Mac both logged in to same Apple ID. Try logging off and logging on if necessary.
  • iPhone Settings => Messages shows iMessage as "on" (sometimes toggling this off and then on fixes some things)
  • iPhone Settings => Messages shows Send & Receive showing both phone number and email (Apple ID)
  • iPhone Settings => Messages shows Text Message Forwarding and your Mac is listed and shown as "on" there.
  • iPhone Settings => Messages shows Send as SMS "on" and MMS Messaging and Group Messaging both "on"
  • On the Mac: Messages => Preferences shows same and correct Apple ID and "You can be reached for messages at" indicates both phone number and Apple ID (email), and "start new conversations from" indicates the phone number.

Messages working for some numbers, but not for others.

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