Can’t turn on or sign in to iMessage on iPhone

Why not?

What happened when you turned it on?

Did you get an error? If so, what did it say?

Does service provider support iMessage activation SMS messages?

click here ➜ If you can’t turn on or sign in to iMessage or FaceTime - Apple Support

nickaye160 wrote:

Thanks for responding, when I turn it on, a notification pops up saying there is an error during activation.

In that case, follow the steps in the support document I linked in my other reply.

Here it is again. click here ➜ If you can’t turn on or sign in to iMessage or FaceTime - Apple Support

Contact your service provider and make sure activation SMS messages can be and are being sent correctly.

what's the solution ?

Mreddy123 wrote:

what's the solution ?

Read Phil0124's posts in this thread.