Messages app is not working on my iPhone 11

AngelaMarsala wrote:

I want to talk with my dad but my iMessage is not working

If you can't send or receive messages on your iPhone or iPad - Apple Support

Please explain what you mean by "not working." Are you able to sign into iMessages? Do you get any error messages? If so, what do they say?

Start by going through the steps in the article razmee209 linked to.