China Unicom cannot send and receive text messages

According to the information you provided, the reasons for not receiving text messages or verification codes are as follows:

1. You can first check whether the mailbox is full, and if so, please delete some information; < /p>

2. If you still cannot receive the message after deleting it, you can change the phone or card to test to see if it is a hardware factor;

3. After eliminating the above reasons, you can try to go to another location. Test whether it can be received to see if the local signal is weak.

If none of the above problems exist, please contact local customer service to handle the problem.

If your mobile phone cannot send text messages, you can try to restart or change the mobile phone for testing, and check according to the following reasons:

1. The SMS center number is set incorrectly, please re-enter it correctly. SMS center number;

2. There is no signal or the mobile phone battery is low;

3. The system is busy due to peak SMS sending volume during holidays. It is recommended that you try again later or avoid Development and sending peak period;

4. The sending format is incorrect. If sending a text message to a PHS user, the area code must be added before the number;

5. The text message sending time exceeds 24 hours;

6. The mobile phone has blocked the text message sending function;

7. Being included in the SMS blacklist;

8. The number balance is insufficient;

9. The SMS inbox and sending box are full.

If the above reasons still cannot be solved, you can contact the local customer service or go to the business hall to confirm whether the SMS function is enabled and let the staff handle it.