If the Oppo smartphone's screen is turned off, it will not be turned on by default when new notifications are sent, and ColorOS offers an option in the settings to turn the screen on when new notifications are sent.

Android 10 | ColorOS 7.0
Screen-Wake when receiving notifications -  Open the  Settings
Screen-Wake when receiving notifications -  Tap on  Notifications & status bar
Screen-Wake when receiving notifications -  Enable or Disable  Wake screen when a notification is received
  1. Open the Settings
  2. Tap on Notifications & status bar
  3. Enable or Disable Wake screen when a notification is received

Oppo Instructions
Loading...

Transmitting...