How To Setting iMessage Receive : Multi-Device Sync in iMessage

How To Setting iMessage Receive : Multi-Device Sync in iMessage - upgraded both my iPad and my iPhone to iOS 5, and iMessage wasn't synchronizing properly. Apparently this, the killer feature in iMessage (and the only one that's superior to Kik thus far in my experimentation), doesn't work out of the box. You have to change your phone settings to enable it.

1. Go to Settings > iMessage
2. Select "Receive At":
   
3. Make sure at least one Email is set (and is set on any other iOS device you have), and then choose "Caller ID":
   
   
4. Pick the email address you want to use (and make sure it's the same on all iOS devices):
   
   

And then you're in business! Shame they didn't make it default to this..