Why can't the mobile phone send short messages?

1. If you are a mobile phone user of Unicom, you can't send short messages on your mobile phone for the following reasons:

1. SMS center number is not set correctly.

2. There is no network signal coverage in the current area or the mobile phone battery is insufficient;

3. The system is busy during the peak period of holiday SMS sending. Try again after the peak period.

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 short message sending time exceeds 24 hours;

6. The mobile phone shields the short message sending function;

7. The mobile phone number is blacklisted;

8. Whether the mobile phone number is in arrears leads to insufficient balance;

9. Whether the SMS inbox and sending box of the mobile phone are full.

Second, the mobile phone can't send SMS processing methods are:

1. Restart or replace the phone for testing.

2. If you can send and receive short messages, it is recommended to re-insert the card into your mobile phone and send yourself a short message to see if you can receive it;

3. If not, it is recommended to check whether there is a problem with the sim card;

4. Please re-enter the correct SMS center number for setting.

Please contact the customer service hotline of the local operator for help.

6. Please bring your mobile phone card to the local operator's business hall for testing or replacement.

Tips: SMS center numbers vary from city to city. It is recommended to call the local operator's customer service hotline for consultation.