OppoR 17 just updated the system, and there is always a background prompt, ding-dong! But there is no information, how to close it?

Take OPPO K3 series, ColorOS 1 1 as an example, you can go to "Settings"; Sound and vibration >: system feedback "to view all prompts and close;

If not, try to clear the background or restart the phone for processing;

If you still have questions, you can try to dial the *#800# key for feedback.