Does the other party know that Huawei intercepted text messages?

The other party is aware of this situation.

Set up text message interception. If the other party sends a message and his message is set to have a delivery report, then after you intercept it, his mobile phone will receive a text message prompting that the text message was not sent successfully, so that the other party will know. .

If the other party is intercepted, when you receive a text message from a blocked mobile phone number, the notification bar will show that the text message has been intercepted. At this time, click on the intercepted text message to enter the SMS application interface and directly open the intercepted message. View content of SMS.