Blackberry - How to reboot the phone using keyboard shortcut key

After an update of the blackberry OS or some software installation, it might prompt to reboot the blackberry phone in order to finish the installation. But some times, we need to use it so we'll choose "Reboot Later" but after finishing using it, how do we initiate the reboot sequence?

Once in a blue moon, the phone is acting up a bit weird, application not responding, some apps is taking too long to respond or the phone performance is lagging. A reboot might be a good try to ditch those weird acts.

This is how to reboot the phone using keyboard shortcut key :

Alt + Shift (the right side shift key) then Del

Tips : put the phone on your lap or table to do this keyboard shortcut sequence, it'll be much easier.