What's wrong with Unicom's mobile phone not receiving information?

If the mobile phone can't send and receive short messages, you can try to restart or replace the mobile phone to test whether there are any of the following situations: 1, the number of the short message center is set incorrectly; 2. There is no signal or the battery of the mobile phone is insufficient; 3. The system is busy during the peak period of holiday SMS sending, so it is suggested to try again later or avoid the peak period of sending; 4. The sending format is incorrect. If you send a short message to PHS users, you need to add the area code before the number; 5. The mobile phone shields the short message sending function; 6. Blacklisted by SMS; 7. Insufficient quantity balance; 8. SMS inbox and sending box are full; 9. Query whether the SMS function is turned on. If the above situation has not been solved, it is recommended to contact the local manual customer service for handling.