I am unable to use iMessage why?
I can’t use iMessage if am trying to activate it it will says activation failed
iPhone 13, iOS 16
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See if the Apple Support article(s) below helps answer your question. The links contain troubleshooting steps you can try.
If you can’t turn on or sign in to iMessage or FaceTime. *
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.
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. See the articles below for instructions.
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. *