It is easy to Disable Notification Center on iPhone Lock Screen and prevent others from viewing your Personal Message and Call Notifications.
Disable Notification Center Access from iPhone Lock Screen
The Notification Center on iPhone is designed to provide a summary of Calls, Messages, Updates and Alerts from various Apps installed on your device.
The default setting on iPhone is to allow access to Notification Center from the Lock Screen, without the need to enter Lock Screen Passcode for your device.
This practically means that anyone that comes accross your unattended device would be able to take a look at your personal Call and Message Notifications.
Hence, it makes sense to Disable Access to Notification Center Access from the Lock Screen of your device and prevent the possibility of your personal Call and Message Notifications from being viewed by others.
1. Disable Notification Center on iPhone Lock Screen
All that is required to prevent anyone else from being able to take a look at your Call/Message Notifications is to disable Notification Center on the Lock Screen of your device.
Go to Settings > Touch ID & Passcode and enter the Lock Screen Passcode for your device.
On the next screen, scroll down to Allow Access When Locked section and move the toggle next to Notifications Center to OFF position.
From now on, anyone that finds your iPhone in an unattended condition won’t be able to take a look at your Call/Message Notifications, without knowing the Lock Screen Passcode for your device.