Unable to use my Messages app.
Why can’t I use my iMessage again that’s very bad. I love Apple so much and now I can’t use my app my iMessage I really need it back because that the only way I can communicates.
[Re-Titled By Moderator]
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If you can't use it because you can't turn on or sign in to iMessage, try the steps in this article: If you can’t turn on or sign in to iMessage or FaceTime on your iPhone - Apple Support
If you can't use it because you can't send or receive messages on iMessage, try the steps in this article: If you can't send or receive messages on your iPhone or iPad - Apple Support