iMessage not working. Can't add mobile number!?
I had never use IMessage before, ever. Only a few days ago did I turn on iMessage which then it said "waiting for activation". I then texted a friend and it was an iMessage BUT she said it was coming from my email. This is really annoying my friends and myself, and it's using up my data on my phone which I have to pay for. I've read related discussions, and have tried everything possible. I've restarted my phone. Signed out and back into Apple. It still uses my email and it does not show my number nor does it let me add my number. All it shows is my email as my address, then underneath says "add another email address".
iPhone 4S, iOS 6