Whenever you receive a notification, it is displayed with a preview, even when your iPhone or iPad screen it turned off. This is surely useful as you won't have to unlock your device every time you receive a notification. But when you are not around your device, anyone can see what you are up to from the notifications.
This is a serious threat to your privacy, especially if you are married! Well, there's a way to turn off this notification from your Lock Screen in iOS 10. It is pretty simple and easy with just a few taps here and there. Check the guide below for complete details.
How to Disable Text Message and Email Notification Preview on LockScreen in iOS 10 on iPhone and iPad
Step #1. Tap on Settings on your iPhone/iPad.
Step #2. Now tap on Notifications, followed by Messages.
Step #3. Tap on Show Preview.
Step #4. Simply toggle “Show Previews”.
Step #5. It's time to disable preview of emails on Lock Screen. So tap on “Mail”, followed by tapping the email account you have set on your iPhone or iPad.
Step #6. Tap on Show Previews.