like above description. This issue happened after I got a new laptop and signed in with my app ID. I tried many ways got from internet like sign out iMessage Apple ID and re-sign in.
MacBook Pro 14″
Hello yuliang311,
Thank you for using Apple Support Communities. Sounds like you're experiencing with the Messages app. Specifically, your messages are not syncing across your devices properly. If so, we'd like to help out and share a helpful resource with you. This resource can explain how you can access all your messages across all your linked devices. Click here: Access your messages on all your Apple devices - Apple Support
Turn on Messages in iCloud
1. On your Mac, choose Apple menu> System Settings, then do one of the following:
* If you need to sign in to your Mac: Click Sign in with your Apple ID at the top of the sidebar, then sign in with your Apple ID. Use the same Apple ID you use to sign in to Messages.
* If you’re already signed in to your Mac: Click [your name] at the top of the sidebar, then make sure you’re signed in to iCloud with the same Apple ID you use to sign in to Messages.
4. Note: Most users only have one Apple ID. If you have more than one, go to System Settings on your Mac, and Messages Settings in Messages, and make sure you’re using the same Apple ID for both.
5. Click Password & Security on the right, then make sure that Two-Factor Authentication is on. If it’s off, see Set up your Apple ID password and security information.
6. In the Messages appon your Mac, choose Messages > Settings, then click iMessage.
7. Click Settings, then select Enable Messages in iCloud.
8. The messages from your other devices that use the same Apple ID appear on your Mac.
9. Note: Depending on how many messages you have, it may take a while for all of them to appear. You can send and receive messages during that time.
We hope this helps you. Thank you for using Apple Support Communities. Take care.
Hello yuliang311,
Thank you for using Apple Support Communities. Sounds like you're experiencing with the Messages app. Specifically, your messages are not syncing across your devices properly. If so, we'd like to help out and share a helpful resource with you. This resource can explain how you can access all your messages across all your linked devices. Click here: Access your messages on all your Apple devices - Apple Support
Turn on Messages in iCloud
1. On your Mac, choose Apple menu
* If you need to sign in to your Mac: Click Sign in with your Apple ID at the top of the sidebar, then sign in with your Apple ID. Use the same Apple ID you use to sign in to Messages.
* If you’re already signed in to your Mac: Click [your name] at the top of the sidebar, then make sure you’re signed in to iCloud with the same Apple ID you use to sign in to Messages.
4. Note: Most users only have one Apple ID. If you have more than one, go to System Settings on your Mac, and Messages Settings in Messages, and make sure you’re using the same Apple ID for both.
5. Click Password & Security on the right, then make sure that Two-Factor Authentication is on. If it’s off, see Set up your Apple ID password and security information.
6. In the Messages app
7. Click Settings, then select Enable Messages in iCloud.
8. The messages from your other devices that use the same Apple ID appear on your Mac.
9. Note: Depending on how many messages you have, it may take a while for all of them to appear. You can send and receive messages during that time.
We hope this helps you. Thank you for using Apple Support Communities. Take care.
Chat with iMessage at laptop, the messages I sent to my friends can't sync to my iPhone, while the messages my friend send to me can sync to my iPhone
