My Samsung Galaxy J3 says that I am connected to the cell network, but it will not let me send any text messages... What do I do to fix this?

I just activated this phone two days ago, and it was working just fine both days. Today, however, it will not let me send any text messages. It says I am connected to the cell network, and I’m showing 3-4 bars…

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Troubleshooting Texting Issues

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