[android-developers] Sensor.TYPE_ROTATION_VECTOR null on Galaxy Tab 7

Hi guys,
I need to get ration vector on Galaxy Tab 7" (P-3100).

mSensorManager.getDefaultSensor(Sensor.TYPE_ROTATION_VECTOR); return null to me.  I know that it is a logic sensor but I've this hardware sensors on device:

Sensore BMA254 Acceleration Sensor
Sensore MS-3E (YAS530) Magnetic Sensor
Sensore MS-x Orientation Sensor
Sensore GP2AP002 Light Sensor
Sensore GP2AP002 Proximity Sensor

So seem to me that I have all the hardware sensors needed by TYPE_ROTATION_VECTOR. So why it returns null to me?

Thanks

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