If you are using Android 8.0 Oreo and have notifications enabled on your device, then you may be facing a problem. The notifications are not being removed from the device, but they are being hidden. This is because Android 8.0 Oreo has a new notification system that is more efficient and hides notifications when they are not needed. To remove the notifications from your device, follow these steps:

  1. Open the Settings app and select the Notifications option.
  2. Scroll down to the bottom and select Remove all notifications.
  3. Tap on OK to confirm your decision.
  4. The notification system will now be unloaded and you will no longer have any notifications enabled on your device.