Q: iMessage not activating

Did you try the troubleshooting steps in here?

If you get an error when trying to activate iMessage or FaceTime - Apple Support

omartahir87 wrote:

 

TTried it all. Nothing is seeming to helP

on latest iOS 6s+ but nothing is helping

What did Apple say when you contacted them about your issue, since you've tried everything in that link provided by Demo.

omartahir87 wrote:

 

that it could be from carrier.

WHen i called carrier they saying everything is fine this end and that it's iPhones fault

Wireless carrier support and features for iPhone in the United States and Canada - Apple Support