Why is there no message prompt after Apple's mobile phone locks the screen?

This message indicates that it is closed.

Step of starting that message remin method:

1. Turn on your iphone and turn on the settings in your phone.

2. Click the option to open the notification, as shown in the figure below.

3. After entering the notification interface, click the open information option, as shown in the figure below.

4. Turn on the switch of this option in the notification center above, as shown in the figure below.

5. Then select the reminder mode as reminder, as shown in the figure below.

6. Pull the interface to the bottom and open the button displayed on the lock screen, as shown in the figure below.

7. In the notification interface, we set WeChat and QQ in the lock screen display. This can play a role in protecting privacy.