Unicom's secondary card can't receive the number-transfer SMS.

Unicom's secondary card can't receive SMS with number, mostly because of the problem of mobile phone number.

Users with mobile phone numbers beginning with 150, 170 and 180 cannot carry them for the time being, because there are still some technical obstacles in this kind of mobile phone numbers, and it is impossible to transmit relevant data through port numbers.

If the secondary card can't send and receive short messages, you can try to restart the mobile phone or change the mobile phone to test whether there are any of the following situations:

1. SMS center number is not set correctly. Please re-enter the correct SMS center number.

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. It is suggested that you 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 SMS sending function.

If this is not the case, I suggest you contact Unicom's manual customer service for verification. The actual situation is subject to local policies.