On macOS version Sequoia 15, Apple ID has been renamed to Apple Account.
How Do I Sync Text Messages Between iPhone and Mac?
You might have enabled automatic syncing when you set up both devices.
On your iPhone, to goSettings>Messages>Send & Receive.
You’ll need the information shown on this screen for your Mac options.
On your Mac, launch the Messages app.
Confirm theApple Accountyou’re logged into here is the same as the one you use on your iPhone.
If not, clickSign Outand then sign in with that Apple Account.
Match theStart new conversations from:drop-down on your Mac to the same setting on the iPhone.
Why Are My iMessages Not Syncing Between iPhone and Mac?
Syncing iMessage between iPhone and Mac usually works flawlessly, but sometimes messages get out of sync.
Connect your iPhone and Macto iCloud and turn on contact syncing.
Go toSystem Preferences>iCloud> and selectContactson your Mac.
Repeat the steps on your iPhone; tapSettings>your name>iCloud> and toggle onContacts.
