If you have tried everything, the last step in the support document that razmee209 provided is to contact Apple Support. This is not Apple Support, use the Contact Support link at the top right of each page here.
Dirtbikeslife32 wrote:
I’ve restarted my phone muitple Times, turned I message off and on multiple times, will not work. Now it says waiting for activation but when I try to sign it doesn’t do anything . Also I’m getting I message texts thru my watch but not phone?? PLEASE HELP
If you get an error when trying to activate iMessage or FaceTime - Apple Support
I MESSAGE NOT WORKING AT ALL IVE TRIED EVERYTHING
