This compass is a tool to search bearings(azimuth) using the built-in magnetic sensors. It has 3 significant features.
1. Although you may turn the phone into portrait or landscape mode, the heading is fixed.
2. The Camera's view is used for reality.
3. Metal Detector(magnetic field) is included to verify the sensors.
The compass app depends on the performance of your device EXACTLY. If it works perfectly, this means your sensors are perfect, too.
If it is inaccurate, please check that you aren't being affected by a magnetic field and the sensors become weakened by age. In order to calibrate your device, there are several options.
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