Why is the screen not bright when WeChat sends text messages?

This is mainly because there is no function to notify the bright screen when the screen is locked. Let me tell you how to open it.

Operation demonstration mobile phone red rice note 1 1pro, WeChat version 8.0.3 1.

1, first open the phone, and then click Settings, as shown in the figure below:

2. Then click the lock screen as shown in the figure below:

3. Finally, click the switch behind the bright screen when the screen is locked, as shown in the figure below: