Updated on 2023-04-12 GMT+08:00
Why Does an SMS Fail to Be Sent?
There are many possible causes for SMS sending failures. In terms of the service procedure, typical failure scenarios can be:
- The API fails to be called. That is, the SMS platform returns a response with an error code when the SMS API is called to send an SMS. Handle the issue by referring to API Error Codes.
- The API is successfully called. However, no status report is returned, and the mobile phone does not receive the SMS.
- Dial the recipient number to check whether the number is dead or suspended or the device is powered off. The Message & SMS platform sends a status report within 72 hours.
- The SMS content may trigger a carrier's manual review. Normally, manual review is triggered only once. If your SMS content repeatedly triggers a carrier's manual review and you want real-time SMSs, contact Huawei Cloud customer service and apply for review exemption. If the platform intercepts the SMS, you can configure such SMS templates as review-free with the permission of the operation manager. If a carrier intercepts the SMS, change the SMS content (by modifying template variables or applying for a new template) to avoid sensitive words.
- The API is successfully called, and the status report indicates that the SMS fails to be sent. Handle the issue by referring to SMS Status Error Codes.
- The API is called successfully, and the SMS status report displays DELIVRD, indicating that the SMS is successfully sent. However, the mobile phone does not receive the SMS.
- Your account is in arrears. For the international SMS service, top up the account, and then the service is available. For the Chinese mainland SMS service, log in to the console, click Signature Management, and check whether the SMS signature needs to be activated. If the signature does not need to be activated, top up your account to use the service. If the signature is deactivated, click Activate to submit the activation application to the operation manager for review. The signature can be used after being approved.
- In mode 2 (suspension upon resource package runout), the resource package quota may be occupied by failed SMSs in a short period of time due to the charging latency. As a result, subsequent SMSs sending fails, but the available quota is not affected.
Parent topic: Troubleshooting
Troubleshooting FAQs
- What Do I Do If an Error Occurs When I Enable the Message & SMS Service?
- Why Is the Signature Review Rejected? (Chinese Mainland SMS)
- What Do I Do If an Error Is Reported When I Upload a Business License During Signature Adding? (Chinese Mainland SMS)
- Why Are the Applications, Signatures, and Templates Lost?
- Template Rejection Reasons and Handling Suggestions
- Why More than One Segment Is Displayed in Template Details?
- Why Is My SMS Application Paused? How Can I Recover It to the Normal State?
- What Do I Do If Message & SMS API Calling Times Out?
- What Do I Do If an SSL Connection Error Occurs During API Calling?
- How Do I Do If the Test Mobile Number Cannot Receive SMSs Because the Sending Frequency Reaches the Upper Limit During SMS API Test?
- Why Does a Phone Not Receive an SMS After an API Is Called?
- What Do I Do If an Exception Occurs When I Access the Message & SMS Console?
- What Can I Do If the Error "Failed to retrieve reminders." Is Displayed on the Console?
- What Do I Do If the Console Displays a Message Indicating that Basic Tenant Information Fails to Be Queried?
- Why Does IAM Permissions Granted to a Message & SMS Member Account Fail to Take Effect?
- What Do I Do If an International SMS Failed to Be Sent?
- Why Does an SMS Fail to Be Sent?
- Why Some Numbers Cannot Receive SMSs?
- Why Send Result Is Displayed as Sending or the SMS Is Received After a Long Time?
- Why Is a Link in an SMS Displayed as Text?
- Why Is the SMS Quantity on the Console Two Times of the Recipient Number Quantity?
- What Do I Do If "The recipient number quantity is out the range of 1–50000." Is Displayed After Uploading a Number File?
- Why an SMS Signature and an SMS Template Cannot Be Selected in the Group SMS Assistant?
- Why Is the Status Code of an SMS REJECTD?
- What Do I Do If an SMS Is Intercepted by the Phone Security Manager as a Junk Message?
- Why Is a Recipient Blacklisted After Replying "T"? How Do I Remove the Recipient from the Blacklist?
- Why Is a Received SMS Displayed as Garbled Characters?
- What Do I Do If an SMS Fails to Be Sent and Error Code E200028 Is Reported?
- What Do I Do If the Message "Could Not Derive Key" Is Displayed When I Commission the SMS Sending Function?
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