Notification behavior in Private Space and Hidden Mode

Private Space in Android 15

In Android 15, google introduced Private Space, a feature that allows users to create a separate, secure area on their devices for sensitive applications. This space operates under a distinct user profile and requires additional authentication. For more information, see here.

Notification Behavior of Apps in Private Space

The following scenarios are applicable when the app is in the private space:

Whenever a notification is posted by an application installed in the private space, it has a lock icon indicating it is from an application in the private space.
The notification behavior for applications installed in private spaces varies depending on the space's state, i.e., locked or unlocked.
- When the space is unlocked, notifications are received and displayed as usual, like any application in the main space.
- When the private space is locked:
  - The application does not display any notifications.
  - Once the space is unlocked, notifications received while the space is locked are displayed or delivered to the application.
When a space is transitioned to the locked state from the unlocked state, the system dismisses/clears all private space app notifications from the notification shade.
Expired messages based on the Expiration settings before the space is unlocked are not displayed/delivered to the application, and the associated notification impressions are not captured for such messages.

Hidden Mode in iOS 18

In iOS 18, Apple introduced Hidden Mode, a new feature that allows users to lock and hide apps. This enhancement to privacy and security enhances the user experience. For more information, see here.

With this feature, you can add additional security for app launch:

Require user authentication (face ID, Touch ID, or password)
Hide and require authentication.

Notification Behavior of Apps in Hidden Mode

The following scenarios are applicable when the app is in the hidden mode:

The app’s notifications aren’t displayed. New notifications received after the app is removed from the hidden mode are displayed.
Notification impressions are tracked regardless of whether the app is in hidden mode and whether the notification is displayed or not.