Smart Bulletin on LG G4 is where you get quick access to most of the LG's native features from the home screen, like remote control, music and calendar events. To turn off / disable Smart Bulletin on LG G4, do as follows:
1. Open Settings and head to the Display settings
2. Tap to open the Home Screen settings and touch the Smart Bulletin option
3. There you are able to specify the content to be shown on the home screen and reorder their appearance
4. At the top right of the screen, there is a toggle button which enables you to turn off /disable Smart Bulletin on LG G4.