How to enable preview message on my Samsung Galaxy S7 edge

Click each step to see the action. You can also click the picture or use the arrow keys.

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Preview message allows you to get a quick look at a message without having to open the app.
1. Touch Apps.
2. Touch Messages.
3. Touch the Menu icon.
4. Touch Settings.
5. Touch Notifications.
6. Touch Preview message.
7. Preview message has been enabled.
Touch Preview message again to disable preview message.