Why can't I send or receive text messages? Unicom. . . .

If the mobile phone can't send and receive short messages, you can try to restart or replace the mobile phone for testing to check whether the following conditions exist:

1, SMS center number 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. The 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.