On the LG smartphone, the status bar shows the time and notification icons, and you can disable the app icons in the status bar if you wish.

However, only the icon is hidden and the notification remains available when the status bar is opened.

Android 9 | LG UX 9.0
Show or Hide Notifications -  Open the  Settings
Show or Hide Notifications -  Tap on  General
Show or Hide Notifications -  Tap on  Apps & notifications
Show or Hide Notifications -  Tap on  Notifications
Show or Hide Notifications -  Enable or Disable  Status bar icons
  1. Open the Settings
  2. Tap on General
  3. Tap on Apps & notifications
  4. Tap on Notifications
  5. Enable or Disable Status bar icons

LG Instructions
Loading...

Transmitting...