Since the BlackBerry PlayBook does not have a removable battery it makes it impossible to perform a true hard reset of pulling the battery like you can on BlackBerry smartphones.This key combination will perform a hardware reboot instead of a software reset on the BlackBerry PlayBook Hold down the volume up key, volume down key, and power button at the same time and hold it for about 15 seconds.

Do not remove the battery of Nokia N 8 unless it is necessary to replace a faulty battery. If N8 freezes, you do not need to remove the battery as there is a “hotkey” to forcibly restart or turn off devices running Symbian^3 Platform.

The shortcut to hard reboot Nokia N8 or device running Symbian^3 Platform

According to official guide, one can hard reboot Nokia N8 by pressing power button for 8 seconds or longer until the screen black out and then vibrates 3 times, if so happen the device software hangs or stops

Teenagers - why is it so hard to understand them, how can I understand my kid? Why is he always so hard to handle? If you're asking yourself those questions, you came to the right place. I will try to show everything from their point of view, the way the teenagers think, their opinion about grown-ups