A compass is a navigational instrument that indicates the direction to the magnetic poles. It's one of the sensors present in most Android devices.

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Compass only working in GPS status app, not in any other apps

On my Nexus 5 (Android 6.0) the compass is working fine in the well known GPS Status & Toolbox app, but not in any other app like Google Sky Map. To debug the problem, I installed a dedicated ...
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compass in Google Maps stopped working (Xperia V CM 12.1)

In the Google Maps app the compass of my Xperia V (model identifier: LT25i | codename: Tsubasa) doesn't work properly anymore (only 180 degree flips). To be more precise the compass already stopped ...
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apps fail to access orientation & magnetic sensors

I've just started using a Doogee Nova Y100X Android-based phone (it's android 5.0). It seems that my apps can only access some of the phone's sensors: accelerometer seems to work, proximity and ...
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Are the reference frame for Android and iOS different?

I am currently trying to get an accurate estimate of trueHeading for Android as asked here. I also tried to use TYPE_ROTATION_VECTOR which outputs a 4D Quaternion and converted these Quaternions to ...