You can turn on bedside mode when you go to sleep so that you're not
notified when you receive new messages. In bedside mode, any alarms that you set will
still go off and your BlackBerry device displays the time, dimly lit. You can also choose whether
or not you want to be alerted when you receive phone calls.
In the Clock app, swipe down from the top of the screen.
Tip: When your alarm goes off in bedside
mode, you can tap anywhere on the screen to snooze the alarm. To turn off the alarm
in bedside mode, swipe up from the bottom of the screen.