From Forum Nokia Wiki

ID		Creation date	May 5, 2009
Platform	S60 2nd Edition, S60 3rd Edition, S60 5th Edition	Tested on devices	Nokia N95, Nokia E90
Category	M	Subcategory

Keywords (APIs, classes, methods, functions): system

Overview

This snippets show how to shut down and reboot the phone in m.

Preconditions

Note: The shutdown and reboot functions of the system module require the Device permission and extended capabilities. For more information about capabilities see Forum Nokia - Capability Descriptions.

Source code

Shut down

use system
 
 
system.shutdown()

Reboot

use system
 
 
system.reboot()

Postconditions

The phone shuts down or reboots (without asking for the PIN code).