Work on iOS 5 or greater . Optimized for iOS7 (work on iPhone 3GS, iPhone4, iPhone4s, iPhone5, iPhone5C, iPhone 5S and with all iDevice with Magnetometer!! ).
Professional Metal Detector, is a professional metal detector, which harnesses the power of the magnetometer 's iPhone. The magnetometer of 'iphone detects all you type Ferrous metals, Ferrous metal is more and more resistance will be high on the display. The magnetometer is located at the apple logo on the back of 'iPhone.