Press the Power/Lock Key to illuminate the
touchscreen if it has timed-out. If the unlock sequence is set to Swipe, a default Lock screen is displayed, but you can
still conveniently check the date, time, and Status Bar icons. You
can drag the Status Bar down to open the Notifications Panel without
unlocking the screen. In addition, you can also quickly access four
applications (the Phone application, the Email application, the Camera application,
and the Messaging application) without fully
unlocking the screen. Simply swipe the icon upward to open and use
it.