When you receive a message or other new information, a pop-up notification appears in the upper left corner of the screen. Select (Settings) > [Notifications] to configure settings for pop-up notifications.
Select [Pop-Up Notifications] to view options for how pop-up notifications are displayed. When you clear the checkbox for [Display Pop-Up Notifications], notifications do not appear.
Disable Pop-Ups While Playing Video
Select the checkbox to disable pop-up notifications during video playback.
Choose the colour of pop-up notifications.
Display Message in Notification
Clear the checkbox to hide message details in notifications.
Notifications When Friends Go Online
Receive notifications when Friends you have selected go online on a PS4™ system. To display the notifications as pop-ups, select [Pop-Up Notifications], and then select the checkbox for [When Friends Go Online].