How do I get my iPhone and iPad messages to sync?

On each iOS device (iPhone, iPod Touch, iPad, iPad Mini):Open Settings.app.Go to "Messages" and make sure iMessage is On.If iMessage is on, "Send & Receive" will appear below it. ... Make note of the Apple ID at the top of the page.Select your phone number and email address(es) that you want to sync to that device. read more

Open Settings > Messages > Send & Receive on your iPhone. At the top of the page is the Apple ID used on your iPhone for iMessage - make note of it. Below will be your phone number along with any email addresses you have associated with your Apple ID. I suggest picking just your phone number as what you will use to send and receive messages. read more

I do understand that SMS text messages will not sync, and only iMessages. This question applies to iOS 6 and Mountain Lion devices as I am running an iPhone 4S and 3rd Gen iPad with iOS 6 and a Macbook Pro with Mountain Lion (OSX 10.8). read more

How to Sync Messages from iPhone to Mac. On Mac, open the Messages app; it will be in your Applications folder. If you’re not already logged in, Messages will prompt you to do so. At the very top left of your display, click Messages on the Menu and choose Preferences. Select Accounts. Tap your iMessage account. read more