iPhone UFO Detector Instructions. 1) Opening App screen shows "Ready to Scan", in bold text on top, and two buttons; Reset and Start Scanning. 2) Before initiating scanning the iPhone must be positioned where it will not be moved for the entire time it is in scanning mode. The reason is that the app uses the internal magnetometer compass to detect anomalies. The app cannot distinguish between whether it’s been moved, or an external magnetic anomaly occurred. You may want to connect external power to the iPhone before initiating scanning. 3) Hit “Start Scanning” button to start scanning. The iPhone app will countdown from 5 to allow you time to set iphone in steady position. Then the word "Scanning" will fade in and out on the screen to confirm the app is operating and scanning. If a magnetic anomaly is detected, the screen will flash "Magnetic Anomaly Detected" and provide the date and time of the detection. An audible alarm will sound for 15 seconds before it resets itself. Leaving the detection data on the screen. You can turn off the alarm by hitting the reset button. To Stop Scanning; hit the "Stop Scanning" button. To Test Application:?When the app is scanning, rotate the phone 45 degrees or so. This rotation will be interpreted as a magnetic anomaly, and trigger the Magnetic Anomaly Detected. Debug:?In the settings, there is a Debug option that may be set. If the Debug option is turned on the magnetometer compass setting is displayed on the screen.