Looking to have some fun with your Android phone?, try this application from the Android Market named Metaloid, its a nifty little app that shows the real time magnetic field(uT), test it by getting it close to electronic products and measure their magnetism. Keep reading for download link.
The maximum magnetic field I was able to read was 2200 uT and that was near my sound system’s subwoofer, the above screenshot is also of near my subwoofer. Take some field readings and post your results in comments . Enjoy!
Download Metaloid Android App
Android market download link.