Unicom sends a text message to Nokia's mobile phone. What if the other party receives a blank text message? The number of the information center is correct, but this is a setting problem, but I don't

Unicom sends a text message to Nokia's mobile phone. What if the other party receives a blank text message? The number of the information center is correct, but this is a setting problem, but I don't know what the problem is. Hello, you need to test whether a person receives your message blank or everyone, if one person is caused by the other party, if everyone is your problem. After the test, if all the information received by the other party is blank, it is necessary to test whether it is a mobile phone problem or a card problem, and then change the card to do the mobile phone test. If it is a mobile phone problem, consult the after-sales service of the mobile phone. If it is a card problem, you can go to Unicom's own office and replace the SIM card with a valid certificate.