ANSWERS: 4
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Once again, learn to use the caps lock, second, check phone settings and call you're service provider. You probably didn't pay the bill.
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Your phone is getting you back for using caps lock all the time.
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perhaps you're out of credit or out of a service area
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It says that because it was unable to send the message. Now, if what you really wanted to ask is why it is unable to send the message, verify network connectivity, verify your phone settings, and check with your service provider.
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