How do you I fix iMessage activation

See the Apple Support article(s) below.

If you can’t turn on or sign in to iMessage or FaceTime.  *

Messages Troubleshooting.   -

Some things you can try. Do you have access to another WiFi network where you can try? That has worked for several people.

Try a restart.

Restart your iPhone   *

Restart your iPad.   *

Try a forced restart. See the section towards the end of the article.

Reset Device. -

If necessary

Hard reset.     -

Do a backup and try a factory reset. Then restore from the backup.

Restore to Factory setting.      *

Restore - If you see an error when you update or restore your iPhone, iPad, or iPod.   *

Backup - Restore your device from an iCloud or iTunes backup.     *

There’s a lot of things you can try if you’re having issues with the initial iMessage activation.

The steps I always try are:

1. Make sure I’m signed into iCloud. Settings -> (Your Name)
2. Turn off iMessage and turn it back on again. Settings -> Messages -> iMessage (toggle the button green/gray)