Diplexy Said:
"Sms Message failure: I have been working hard to send sms from my phone via the cellular provider with no avail. Persistent failure of sms messaging is frustrating. I look forward to the community swift assistance and guide towards the resolution."
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Thank you of the screenshot.
Troubleshooting Text Messages:
A. See here: If you can't Send or Receive Messages on your iPhone, iPad, or iPod touch - Apple Support
B. Whom to Contact:
Contact your carrier, as they are the one who provide you with the service of Messagin