I sent a Unicom mobile phone card with broadband and internet access fee. After a few days, I found that I couldn't receive the SMS, and I failed to send the SMS. The center number is no problem.

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

1, whether the cell phone signal is normal;

2. Whether the SMS function is enabled on the mobile phone card.

If the above situation has not been solved, it is recommended to contact the customer service of the place of origin for handling.