iMessage will not activate after removing 14.5 beta

[iFoggy]

Has anyone had an experience where you have upgraded to 14.5 beta 2, restored to a clean version of 14.4 and now cannot activate iMessage on your mobile number?

literally tired everything.

 

[leventozler]

Did you try the deregister tool? https://selfsolve.apple.com/deregister-imessage/