When the short message is opened and the delivery report is sent successfully, the delivery content will not be displayed.

SMS needs signaling. It shows that the sending is successful, and it is only a message replied by the sender's SMS center. The delivery report is the information sent by the SMS center of the receiver to the user terminal and returned after success, and the two cannot be equal.

If not, the solution is as follows:

1. If only one contact has this phenomenon, it may be the other person's mobile phone problem. Suggest that the other party check whether there is something wrong with the mobile phone.

2. If this phenomenon occurs when sending messages to everyone, it is suggested to check whether the network signal is stable.

3. Try to restart the phone.