One of the new features of Mountain Lion is the Messages app – and the "fact" that all your Messages threads are consistent across all your devices.
I would really like to have my the threads that I have going on my phone, automatically sync to my iPad and ML Mac. I understand SMS messages will not sync. The one caveat that I noticed is that it must be started on my Mac.
How do I get iMessages in sync across an iOS 5 (or older) iPhone, iPad and Mac?
Best Answer
Theres been a few reports online of messages sync being a bit buggy if you don't set it up exactly right. Heres a few solutions that should get everything syncing nicely for you:
Firstly, you need to have all devices set up to the same Apple ID
iOS Devices (iPhone, iPod Touch, iPad):
Mac version:
In a nutshell: everything needs to be consistent. Use the same Apple ID everywhere and an email address as a caller id for best results.
If things are still not syncing, try the following.