How does OPPO mobile phone WeChat receive the bright screen of information?

Here, take OPPO R9S mobile phone as an example, and the setting method is as follows:

First click the "Settings" icon on the mobile phone desktop, as shown in the figure.

2. Then select the "Notification and Status Bar" option in the setting interface of the mobile phone, as shown in the figure.

Third, open "Notification Management" in the notification and status bar interface, as shown in the figure.

4. Click the "WeChat" option after entering, as shown in the figure.

5. Finally, turn on the switch of the options in the red box below, as shown in the figure.