How to disable popup/heads up notifications globally in Android 9 Pie? I recently upgraded to a Samsung Galaxy S9 with Android 9 Pie installed. It has an annoying feature, each time I e.g. get a message via Telegram, a pop-up window appears over any other application I am currently using on top of the screen:



I want to disable that for all apps. I found this reddit answer:


  When you're in notification settings for an app, there's the label for
  the notification channel and the checkbox next to it. Checking the
  checkbox enables/disables notifications entirely. Tapping the label,
  as unintuitive as it is, brings you to the advanced settings where you
  can disable pop up/sound/vibrations.


If I go to e.g. Settings>Notifications>Telegram, I can tap each single chat and disable pop-ups. This is tedious, surely there is a global option to turn this invasive feature off?
My S9+ is running Androud 10 UI2 and Telegram 6.0.1
I had the same issue which I finally solved. I went all through the app settings, then i tried android-apps-telegram settings with no luck.
I finally looked in android-settings-notifications and down at the bottom it says "looking for something else?" Click on the Smart pop-up view option and shut telegram off.