How can devices such as phones know what way they are facing or being rotated?

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How can devices such as phones know what way they are facing or being rotated?

In: Technology

A tilt sensor. The gyroscope sensor measures changes in tilt & angle, while an accelerometer sensor detects changes in lateral directions. Combined, the phone can detect it’s orientation and movement really well.

The gyro sensor uses some very small microscopic scale moving parts to measure changes in tilt. A very tiny gizmo that moves around and electrodes to detect it’s movement.