apps are already allowed to send notifications on the LG smartphone after installation. these notifications are displayed acoustically, haptically or optically depending on the default settings. in addition to activating and deactivating all apps, notifications can also be controlled for each individual app. in addition to selecting all notifications, individual notification categories can also be blocked.

Android 9 | LG UX 9.0
Notification -  Open the  Settings
Notification -  Tap on  General
Notification -  Tap on  Apps & notifications
Notification -  Tap on  App info
Notification -  Tap on desired  App
Notification -  Tap on  App notifications
Notification -  Enable or Disable  Notifications
  1. Open the Settings
  2. Tap on General
  3. Tap on Apps & notifications
  4. Tap on App info
  5. Tap on desired App
  6. Tap on App notifications
  7. Enable or Disable Notifications

LG Instructions