iMessage activation unsuccessful after that try any way.

sarbsaini18 wrote:

How to activate my iMessage or face time

https://discussions.apple.com/content/attachment/8758d66f-d290-4fac-84ac-7acdfa573c10

Follow all steps here If you get an error when trying to activate iMessage or FaceTime - Apple Support

In such a situation, I would contact Apple Support directly, explaining your problem.

Use this link:--> Get Support

Regards

Giulio