What is the failure of SMS sending (what is the failure of oppo mobile phone SMS sending)

System: iOS 16.0

Reasons for SMS sending failure:

1. There are sensitive words in the short message, which is illegal and blocked by the short message platform. This situation is more common, just remove sensitive words or replace them with synonyms.

2. The SMS account was closed for various reasons, and the signature was blocked by the operator. Please contact customer service of SMS platform for handling.

3. If you don't report the content or signature of the short message, the short message will fail to be sent, and you only need to report it in advance.

4. The number sent is an empty number, a stop number or a blacklist number.

5. The number that failed to be sent received 106 SMS on the same day, which exceeded the limit of the day.

6. It involves sending marketing short messages of special industries in violation of regulations.

7. Suspend or close the temporary maintenance of the SMS sending channel.

8. Different regions have different shielding rules, and some regions may be directly shielded by operators.

9. There is something wrong with the SMS platform's own system.

10. The SMS didn't unsubscribe at last.