How to set the message accepted by Samsung s7 after locking the screen as the content is hidden?

When the mobile phone is locked, when it receives missed messages or calls, it will display unread messages or missed calls on the lock screen. To hide the notification, the suggestions are: Settings-Lock Screen and Security-Display the notification on the lock screen-Select Close. Note: Some machines do not support hiding missed messages or missed calls when the screen is locked. If you don't want to display this prompt for the time being, you can pull down the top curtain of the screen and clear the corresponding notice when locking the screen.