When you put your BlackBerry device in standby mode, the device screen backlight turns off
and the screen locks. Wireless connections and clock alarms aren't affected.
Press the Power/Lock key on the top of
your device.
To take your device out of standby mode, swipe up from the bottom of the
device to the top of the screen.
Restart or reset your device
If your BlackBerry device is running slower than usual or not responding, turning off
and turning back on your device might help to solve the problem.
Do one of the following:
To restart your device, press and hold the Power/Lock key on the top of your device. Tap .
To reset your device, press and hold the Power/Lock key for ten seconds.