Why doesn't the SMS screen of oppo phone light up?

Notification management can manage the notification rights of all applications, and you can choose the presentation method of notifications for each application. Setting method: 1. Go to settings >; Notifications and status bar > notification management. (1) Screen lock notification: whether to receive notification when the phone locks the screen. Show the content of the notice, show the notice but hide the content, and don't show it. (2) Desktop corner: When notification is selected, digital corner, point corner or no corner will be displayed on the desktop icon. Mixed (mixed number corner marker and dot corner marker), number (displayed when unread mail is applied), dot (continuously displayed when online notification is applied) and no display. (3) More: unimportant Note: Do not fold, fold to the end. Notification History: You can view past notifications and delayed notifications. Allow display of delayed notifications. Show concise banners in full screen. Notify lighting feedback in full screen: In full screen (such as watching videos and playing games), the notification bell is softer and the vibration is reduced. When the screen is locked, the screen will light up when the call is notified. (4) select the APPlication that needs to set notification management, such as "Bi Li Bi Li" app > turn on or off notification authority, and set application notifications (whether to allow notifications and category items) according to actual needs. This answer applies to all OPPO models.