Why is there no lock screen display for Pinduo?

No, it's because you turned off the lock screen display in the phone settings. Just open the permissions. The setting method is as follows:

I'm here to demonstrate with an Android phone. )

1, open the phone settings and find the notification;

2. Enter "Pinduoduo" in the top search bar;

3. Open the button to allow notification, as shown in the figure, and close it.

4. After opening, you can see that the lock screen notification has been opened.

In this way, when there is news notification in Pinduoduo, the locked screen will also be displayed on the mobile phone screen.