Cannot send text messages from China Unicom mobile phone

If you are using a China Unicom number, the inability to send text messages may be caused by the following reasons:

1. The mobile phone number status is abnormal (out of service, canceled, etc.);

2. The SMS center number is wrong;

3. The SMS function of the mobile phone card has not been activated;

4. A large number of SMS messages have been sent in a short period of time;

It is recommended to eliminate the above reasons. If you still have questions, you can contact the local China Unicom customer service for consultation.