Getting Cell ID in Java ME

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Article Metadata

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Code Example

Source file: Media:CellIDMIDlet.zip

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Tested with

SDK: Nokia SDK 1.1 for Java, Nokia SDK 2.0 for Java

Devices(s): Nokia 701, Nokia Asha 305

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Compatibility

Platform(s): Series 40, Symbian

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Article

Keywords: System.getProperty(), Nokia proprietary system properties

Created: jarmlaht (14 May 2008)

Last edited: skalogir (16 Aug 2012)

Overview

This code snippet demonstrates how to get the mobile cell ID by using Nokia 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:

Platform Version	Security Domain	System property
Series 40 3rd Edition, FP1 up to Series 40 5th Edition	Manufacturer / Operator	System.getProperty("Cell-ID")
Series 40 5th Edition, FP1 up to Series 40 6th Edition FP1	Manufacturer / Operator	System.getProperty("com.nokia.mid.cellid")
S60 3rd Edition, FP2 (or newer)	Untrusted 3rd party	System.getProperty("com.nokia.mid.cellid")
Series 40 Developer Platform 1.0 (or newer)	Untrusted 3rd party	System.getProperty("com.nokia.mid.cellid")

Note: Signing in the manufacturer domain practically means that the property is inaccessible to 3rd party developers. Please ensure that your device belongs to a platform where the system property is available in the untrusted 3rd party domain

Source

import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
 
public class CellIDMIDlet extends MIDlet implements CommandListener {
    private Form form;
    private Command exitCommand;
    private String old_cell_id;   // Old cell id property for some Series 40 devices
    private String new_cell_id;   // New cell id property for the latest Series 40 and Symbian devices
 
    public void startApp() {
        form = new Form("Getting Cell ID");
        old_cell_id = System.getProperty("Cell-ID");
        new_cell_id = System.getProperty("com.nokia.mid.cellid");
        form.append("Old System Property: " + old_cell_id + "\n");
        form.append("New System Property: " + new_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