How to enable message previews on my LG K4 2017

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

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With message notifications, you can see a preview of incoming messages without leaving your current screen.
1. Touch Messaging.
2. Touch the Menu icon.
3. Touch Settings.
4. Touch Notification.
5. Touch the Notifications slider to turn it on.
6. Notifications have been enabled.
Touch the Notifications slider again to disable them.