Why can't Huawei send text messages?

1. Enhanced Information cannot be sent. If "enhanced information" is displayed in the edit box, the message indicating that the mobile phone is sending enhanced information can be handled by the following methods: 1. Please turn off and turn on the enhanced information switch (SMS >: three-point button > Settings > Enhanced Information) again. 2. If you need to contact the other party urgently, I suggest you turn off the enhanced information function first and send the information by ordinary SMS, so that you can contact the other party in time. If you send enhanced information, the other party can't receive it. Maybe your message or number may be controlled by the operator's security policy, and the operator did not send it to the receiving end after receiving the message. For details, please call the operator customer service to confirm the cause of the problem. 4. If it still hasn't been solved, I suggest you consult the operator. Second, some short messages can't be sent, such as to operators (China Mobile/KOOC-0/0086, China Telecom/KOOC-0/0000, China Unicom/KOOC-0/00/KOOC-0/0). If the message is sent successfully, it means that some short messages can't be sent, and it is most likely that the phone is in arrears. At this time, not only the message can't be sent, but also the phone can't be called.