So I went to send my friend a text message(she has an iPhone 4, ios5) from my iPhone 3gs(ios5). iMessage must have been already enabled. We are able to see when each other are typing. But, when I message her, it comes up with my email address rather than my phone number? And when i go to click 'remove email' in my iMessage settings it doesn't allow it? Is it possible to remove my email address, so that it just sends via my mobile number?