Android
Hide Silent Notification Icons in the Status Bar auf Android
A crowded status bar usually comes from apps that keep pushing silent notifications. Android still shows an icon for each one, even if it never buzzes or makes a sound, so the bar fills up with symbols that carry no real urgency.
The setting responsible for this sits inside the notification settings, not inside each individual app. Go to Tap on Settings ➔ Tap on Notifications ➔ Enable or disable Hide silent notifications in status bar to switch the behavior on or off.
Turning this on removes icons for notifications that are marked silent, meaning they neither play a sound nor vibrate. Notifications that are not silent, such as messages or calls, keep showing their icon as usual.
This setting only changes what appears in the status bar. It has no effect on the notification shade, so all notifications, silent or not, still show up in full when you swipe down from the top.
If you want to stop an app from notifying you at all, disabling notifications for that app is the better fix. Hiding icons in the status bar only cleans up the display, it does not block or delete any notification.