How do I change the lock screen notifications on my Samsung Galaxy Grand Prime™?
Any notifications you receive while your device is locked will display on your lock screen. By default, all content is displayed, but you can change the lock screen notification settings to hide sensitive content or all notifications.
Screens and settings available may vary by wireless service provider and software version.
Change Notification Settings
From the Home screen, touch Apps.
Touch Sounds and notifications.
Touch Notifications on lock screen.
Select Show content to display all notification content on your lock screen, Hide content to hide notification content, or Do not show notifications to turn off lock screen notifications completely.