Can Gravity sensor of our phone will work in space or Moon?

The so-called "gravity sensor" is just an accelerometer. It measures acceleration force, in the X, Y, and Z directions. The software assumes that the force of 9.81 m/s^2 is the standard Earth gravity. If you were on the moon, the sensor would measure only 0.1654 g's, so it would assume that you were falling (accelerating) downwards at 0.8346 g's.

1.0000 - 0.1654 = 0.8346

Notice: the sensor does NOT measure speed. There is no way for the sensor to know if the acceleration force is from acceleration of movement, or from gravity. The software can't even subtract standard Earth gravity and assume the rest is from movement, because the real force of gravity changes as you move around the Earth, and up and down mountains or in airplanes.

So back to your question. I don't think the phone sensor (with it's software) would give the expected results on the moon, or in orbit, or even just skydiving.

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