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An SMS failed to be sent and when I checked out the details the last line said "Error code 331".

What does this error mean ?

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Error code 331 is an error that you would get back from the SMS gateway. It means: No network service is available.

If you continue to get that message, I suggest you call your carrier.

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  • Actually I retried and it was sent successfully but I wanted to know the error meaning. How did you know the meaning of the error? Is there a list somewhere of all error codes ?
    – M.Sameer
    Commented Jul 18, 2011 at 13:41
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    I google'd "SMS Error code 331" and found a site that had a listing of the SMS Gateway errors. Commented Jul 18, 2011 at 14:02

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