How to disable Peek/Heads up notifications on LG G5 with Android N I've read in Android N it's possible to disable Peek/Heads up notifications on by turning on "Show full importance settings" in System UI Tuner, but I can't seem to find such on option on my LG G5 with Android N.

How do I disable Peek/Heads up notifications on LG G5 with Android N?
are you looking just to shut off the notifications?

If so:
from the Home page -> Pull down from the top and click on the Sprocket (or Settings) -> If you have the Grid View click on the Sounds&amp;Notification -> Click on Apps -> Scroll down and click on Settings 

From here, you can control you want the Peek, but making silent, or click on the Lock Screen and Hide all notifications.

I hope this helps.