unregister device
i dont have my iphone anymore and i want to deactive imessage you do that for me from there
iPhone 4, iOS 7
You aren't addressing Apple here. We are all users like you.
To unregister you number from iMessage, you can try changing the password for the Apple ID you were using for iMessage by going to https://iforgot.apple.com. If that doesn't work, you will have to contact Apple support for assistance: http://support.apple.com/kb/HE57.