How do I fix 'iMessage Activation' error after switching to eSIM on iPhone?

Hello: I’m travelling and bought an eSIM while abroad. Ever since I started using the eSIM, my iMessage has changed from my email address to my phone number. When I try to change it back, I get this error message.

I’ve tried turning off iMessage and restarting my phone, but the same thing keeps happening.

[Re-Titled by Moderator]

iPhone 15, iOS 18

Posted on Feb 25, 2025 9:30 AM

Similar questions

Solution to iMessage Activation when I’m trying to sign in my Apple ID to iMessages saying an error occurred during the activation
1207 2
iMessages activation error, verifying phone number When I toggle on iMessages, it pops up with activation error. When I select “send and receive”, it does not allow me to pick my phone number. And it shows the words “verifying…” right next to my listed phone number. tried rebooting, toggle in and off, reset network, verified my number in cloud and iPhone- I don’t know what to do.
389 1
My Imessage acount has an activation error Imessage is not activated on my phone number
795 1

There are no replies.

This thread has been closed by the system or the community team. You may vote for any posts you find helpful, or search the Community for additional answers.