I upgraded my iPhone 4S and iPad 2 to iOS 6 on Wednesday as well as my Mac to 10.8.2 and merged my phone number and email address. Everything went perfect from there, all my sent and received iMessages to/from any device showed up on all 3. Today I bought my iPhone 5, and things have gone a bit weird. All my sent messages show up on all 3, but not my received messages. I have checked all the settings and they're all exactly the same as they were yesterday, so I don't know what may have changed. Anyone else having this problem or know what it may be? Any help would be greatly appreciated.