Using Quick System Info found one more sensor than the other apps on my Captivate, a Rotation Vector Sensor. Anybody know what it is? Sounds similar to a gyro and looking at some google developer hits, it seems some people have crashes if they try to use it without a gyro on board. Thanks the info on the orientation sensor. How accurate of a sensor is it? In aircraft we only use a compass for 1 axis and then put that info into a gyro, but it makes sense to use the magnetic field for more than that, especially if the magnetic dip issues are avoided and if it doesn't have to be that precise. Do most Android devices that have the magnetic sensor also use it for orientation or does it need a more accurate sensor than a basic one? I know the "6 Axis Accelerometer" is Samsung taking creative license on the box but I don't know what other sensor they would be using without the gyro. Maybe the orientation sensor output or this rotation vector sensor.