When you get a new notification, you can open the Notifications panel to see the message, reminder or event notification.
The Notifications panel lets you quickly switch between recently-opened apps, and also lets you easily turn on settings such as Wi-Fi and Bluetooth.
To open the Notifications panel, press and hold the status bar, then slide your finger downward.

If you have several notifications, you can scroll down the screen to see them all.
Tip: You can also open the Notifications panel on the Home screen by pressing

and then tapping
Notifications.