Iphone can't set the SMS center number (iPhone SMS service center number setting failed).

1."iPhone failed to set the SMS center number. We will provide you with the video and corresponding graphic information that the iPhone can't set the SMS center number, which may be due to signal interruption or data error. It is suggested to restore network settings, start data roaming and reset the number of SMS center. First, open the settings and find the general options.

2. Then select Restore, and select Restore Network Settings.

3. Then return to the setting interface and click Cellular Network.

4. Select the cellular data option and click Start Data Roaming.