It’s not working
It says “An error occurred during activation.
Try again.”
iPhone XR, iOS 15
If you already tried (to no avail) ALL the steps provided in this support article:--> If you can’t turn on or sign in to iMessage or FaceTime - Apple Support, AND if you're sure that your traffic cellular carrier plan includes international SMS availability, contact Apple Support directly, using this link:--> Get Support
Regards
Giulio
