Apple 7 suddenly can't send text messages. What should I do?

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Click "Settings" on the desktop.

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Click "General" in the settings.

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Pull to the bottom and click "Restore".

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Click Restore Network Settings.

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Enter the power-on password of iPhone.

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Click the red Restore Network Settings.

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If you still can't send SMS after recovery, you can try the following methods. Click "Phone" on the desktop.

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Enter "*#5005*7672#" in the dialing page and click "Dial".

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Confirm the number of the SMS center that appears, if it is not modified.

What if I can't send text messages after upgrading ios7 and the solution?

Step 1: Check the center number.

Enter "*#5005*7672#" in the dial, and click "Call" to see the SMS center number set by iPhone5.

Step 2, set the SMS center number.

Enter "*5005*7672* SMS Center Number #" in the "Dialing Keyboard" and click "Call" to complete the setting of SMS Center Number (for example, Shenzhen Mobile * 5005 * 7672 *+861380075500 #).

After setting, restart.