My iPhone text/imsg isn't working?

Hi i'm wondering if people have had this problem before and can tell me how to fix this. My iPhone 5s can't text apple and non apple phones. I can't text my friends or some family. When I go to type the typing bar where you disable I message or something I glitched in to it so it won't turn off. Hope you can help.

You have to go to settings and then imessage. Make sure you're phone number is checked and make sure the settings are right. Also make sure that you're carrier has the phone connected by making a call or something.

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