A large number of people wind up here at the Internet Patrol site every week looking for ways to track their lost or stolen cell phone. Too bad it got stolen while you were getting down from that busy train. How To Track Stolen/Lost Nokia Mobile PhoneAfter six months of saving up money you finally bought that Nokia N900. Hardware for this is already used by most cell phone companies for connection of headsets. Connection point for external trace cell phone numbers audio processing devices. Only software protocol needs to be added. Vibrator is standard in many cell phones. Visual indication of line status. Vibrator is standard in many cell phones. Also buttons have tactile feel of activation. Not a problem in most phones today. Operable with little or no color perception.