How did Huawei's mobile phone know that the SMS was hacked by the other party?

Send text messages. By querying Huawei's official official website information, we can know that if you suspect that you have been hacked by the other party, you can try to send a short message to the other party with Huawei's mobile phone to see if the short message can be sent successfully. If the short message fails to be sent, a message such as "Sending Failed" will be prompted, because it has been blacked out by the other party.