I have a 3GS and iPad 2. My partner has iphone4 and iPad 2. All at IOS5 If I send a message from my iPhone to his iPhone4 using his phone number it goes via iMessage to the iphone4 only. If I sent a message from my iPad to his iPhone4 using his phone number, the iPad likes that ( some how knows that it's mapped to his apple I'd?) and he received on his iPhone4 AND iPad from user@appleID.com not his phone number. So the confusion starts. On his iPhone4 he has two threads, one from my phone number and one from my apple I'd. Depending on which he replies to, one I get on my iPad, one I don't. Is this behaviour expected? It's confusing the hell out of us both... Apple seems t have worked out that my phone number is tied to my apple ID, so why then do we get separate iMessages appearing. Why not merge them. And further more, if my iPhone gets an iMessage sent to my phone number, why doesn't that get sent to my iPad too? Anyone help?