I have tried every troubleshooting suggestion for my iMessage which is not working and it still won’t work.

cortney205 Said:

"I have tried every troubleshooting suggestion for my iMessage which is not working and it still won’t work."

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Troubleshooting iMessage Activation:

A. Try Setting it Up Correctly:

Go Here: Use Messages on your iPhone, iPad, or iPod touch - Apple Support

B. Install a Carrier Update:

It might be prompting you for a carrier update to install. So, go here for that. Update your carrier settings manually on your iPhone or iPad - Apple Support

C. Enable Messages in ScreenTime:

1. Go to: Settings
2. Tap: Screen Time
3. Tap: Allowed Apps
4. Tap: Messages (So it is in "ALLOWED APPS")

No success?....

D. Whom to Contact:

Contact your Carrier, as they are the one who provide you with the service of Messaging.

Be sure to use the "Contact Apple Support" link in the "Related Article."