Look at messages from another iphone
Trying to connect to my iMessages that are on another phone
iPhone 7 Plus, iOS 11.0.3
Trying to connect to my iMessages that are on another phone
iPhone 7 Plus, iOS 11.0.3
I don't believe that there is a way to do this unless you restore the "new" phone and restore a backup.
I'm pretty sure that even if you sign into iCloud on the new phone the messages won't come across.
Look at messages from another iphone