I am using the Unity reference and example implementation here https://docs.unity3d.com/ScriptReference/Gyroscope.html

I struggle to fix an orientation problem. When my phone lies flat on the ground, screen facing upwards, unity thinks I am looking as if I'd take a photo of a landscape. When I actually hold the phone as if I'd take a landscape photo, the screen shows me the sky. Rotating then shows me an arc from sky to my left or right side.

What I want is: Holding the phone as if I'd take a landscape picture should do the same in Unity.

Here is a short video where the phone lies flat and then I pick it up and look left and right on a chair.

and this is the codesnipped responsible:

protected void Update()
{
    GyroModifyCamera();
}

void GyroModifyCamera()
{
    transform.rotation = GyroToUnity(Input.gyro.attitude);
}

private static Quaternion GyroToUnity(Quaternion q)
{
    return new Quaternion(q.x, q.y, -q.z, -q.w);
}

I am using the Unity reference and example implementation here https://docs.unity3d.com/ScriptReference/Gyroscope.html

I struggle to fix an orientation problem. When my phone lies flat on the ground, screen facing upwards, unity thinks I am looking as if I'd take a photo of a landscape. When I actually hold the phone as if I'd take a landscape photo, the screen shows me the sky. Rotating then shows me an arc from sky to my left or right side.

What I want is: Holding the phone as if I'd take a landscape picture should do the same in Unity.

Here is a short video where the phone lies flat and then I pick it up and look left and right on a chair.

and this is the codesnipped responsible:

protected void Update()
{
    GyroModifyCamera();
}

void GyroModifyCamera()
{
    transform.rotation = GyroToUnity(Input.gyro.attitude);
}

// The Gyroscope is right-handed.  Unity is left handed.
// Make the necessary change to the camera.
private static Quaternion GyroToUnity(Quaternion q)
{
    return new Quaternion(q.x, q.y, -q.z, -q.w);
}