You can't receive SMS after changing the number information.

Unicom users can't send SMS for the following reasons:

1, the SMS function of mobile phone number has not been opened, so you can contact the local customer service hotline to open it;

2. The SMS center number of this number is set incorrectly. Because the SMS center numbers in different provinces are inconsistent, you can contact the local customer service hotline for verification.

3. The mobile phone fee is insufficient, so you can't send and receive SMS normally, just pay;

4. The mobile phone number is operated to block the service in the communication, and the service in the communication can be restored.