Samsung
Show or Hide Secure Folder Notification Content auf Samsung
Secure Folder treats notifications from its apps separately from the rest of your phone. Even if you already allow content previews for your regular apps, Samsung still hides the text and sender details for anything sent by an app running inside Secure Folder. This is a privacy measure, since Secure Folder is designed to keep its content invisible until you actively unlock it.
The setting responsible for this lives inside Secure Folder itself, not in the general notification settings of your phone. To change it, open Secure Folder ➔ open the Menu ➔ tap Settings ➔ tap Notifications and data ➔ enable or disable Show content.
Once Show content is turned on, notifications from Secure Folder apps display the sender, message text, or app details the same way as any other app on your phone, including on the lock screen. Turning it off again hides the content, showing only that a new notification exists.
Enable this option only if you are comfortable with Secure Folder notifications appearing on the lock screen with full content. If you share your phone occasionally or want an extra layer of privacy, leave content hidden and check notifications after unlocking Secure Folder directly.