How to enable preview message on my Samsung Galaxy S6 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 MORE.
4. Touch Settings.
5. Touch Notifications.
6. Touch Pop-up display.
7. Preview message has been enabled.
Touch Pop-up display again to disable preview message.