My text messages aren't going through?

I have Verizon, iphone 4. Lately my conversations between me and other people have been going slower and then in the evening it will stop suddenly. I asked them if they have been getting my texts and they said no. It doesn't matter what phone I send my text to, they don't receive it. What can I do?

Check the setting of your message app. If this doesn't work contact your telecom service provider

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