How to set the message notification black screen display text with acepro?

One plus acepro setting message notification black screen display text method is as follows:

1. Find the setting options of the mobile phone and enter the main page of setting.

2. Find the final advanced screen lock setting option.

3. Select this option when the screen is locked.

4. Select the option to display the notification and its contents.

5. There are several options to choose from, as well as the option to display all notifications. There is also an option to display the notification and its contents, and an option to display the notification but hide the contents, which you can choose by yourself.