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?