From Forum Nokia Wiki

ID	CS000947	Creation date	May 14, 2008
Platform	Series 40 3rd Edition, FP1 and S60 3rd Edition, FP2	Tested on devices
Category	Java	Subcategory	MIDP 2.0

Keywords (APIs, classes, methods, functions): System.getProperty(), Nokia proprietary system properties

Overview

This code snippet demonstrates how to get the mobile cell ID by using Nokia-proprietary system properties in Series 40 and S60 devices. Note that a different system property is used to get the cell ID in Series 40 and S60 devices:

Series 40 3rd Edition, FP1 (or newer):

System.getProperty("Cell-ID")

S60 3rd Edition, FP2 (or newer):

System.getProperty("com.nokia.mid.cellid")

Note: In Series 40 devices the MIDlet needs to be signed to a manufacturer or operator domain; otherwise the property will be null. Signing is not needed for S60 devices.

Source

import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
 
public class CellIDMIDlet extends MIDlet implements CommandListener {
    private Form form;
    private Command exitCommand;
    private String S40_cell_id;   // Series 40 cell id property
    private String S60_cell_id;   // S60 cell id property
 
    public void startApp() {
        form = new Form("Getting Cell ID");
        S40_cell_id = System.getProperty("Cell-ID");
        S60_cell_id = System.getProperty("com.nokia.mid.cellid");
        form.append("Series 40 devices: " + S40_cell_id + "\n");
        form.append("S60 devices: " + S60_cell_id);
        exitCommand = new Command("Exit", Command.EXIT, 1);
        form.setCommandListener(this);
        form.addCommand(exitCommand);
        Display.getDisplay(this).setCurrent(form);
    }
 
    public void pauseApp() {
    }
 
    public void destroyApp(boolean unconditional) {
    }
 
    public void commandAction(Command c, Displayable d) {
        if (c == exitCommand) this.notifyDestroyed();
    }
}

Postconditions

When the MIDlet is run in either a Series 40 or S60 device, a cell ID should be shown on the Form (one will have a numeric value and another will have 'null').

See also

Java ME System properties