Hi guys, Wasn't quite sure where to post this at the moment. Technically this is an issue on iMessage but becomes apparent on iOS6 and Mountain Lion. I am currently running iOS6 beta, and Mountain Lion Preview 4. (iPhone 4S, MacBook Pro Late 2011). I have iMessage set up on the phone as follows: 'You can be reached by iMessage at:' '+4475XXXXXXXX' 'firstname.lastname@example.org' 'Start New Conversations From:' '+4475XXXXXXXX' This has worked fine. I have now added my iMessage account to Messages on Mountain Lion - it is unable to add my UK phone number as a "Receive iMessages at" entry. This means, the advertised feature that you can start a conversation on the iPhone and continue it on the Mac simply does not work. The conversations do not appear. If I start a new conversation with someone via Messages, I appear as a duplicate entry in their Messages app on the iPhone with a new conversation, but appear in the same conversation as before on the iPhone. (iPhone only sees one, merged copy of the two conversations). The Mac only sees the messages sent directly to the email address. Whoever I'm messaging doesn't know which message entry to use! http://i32.photobucket.com/albums/d43/dontpannic/IMG_9274.png Is this how it works at the moment in this beta? Can anyone else confirm?