How to turn off the icon on top of oppo phone

How to set up the message notification corner icon:

"Settings ＞ Notification & Status Bar ＞ Notification Management ＞ Select corresponding software ＞ Show corner icon on desktop icon".

Warm tips:

1) Currently, only ColorOS 3.0 and above are supported.

② For ColorOS 5.0, click "Show corner icon on desktop icon", you can choose dot corner/number corner.

3) Numeric corners need to be adapted by the app itself, and for apps that are not adapted to numeric corners, you can only select dot corners.

③ Numeric corners need to be adapted by the app itself.