You can access this by tapping the menu button on the bottom left of your device.
2. Select “Notifications”
This is typically located near the top and has a red icon.
3. Scroll down and select “Messages”
This will be a list of all apps installed on your phone capable of sending notifications, arranged alphabetically.
4. Toggle ‘Show Previews” off
This is located under “Message Options” at the bottom. If the toggle switch is on (green), the content of incoming text messages will be displayed on your lock screen when you get a notification. If the toggle is off (white/grey), the content of the messages will be hidden on the lock screen.