- Which of the following controls the orientation of your phone?
- How does your phone know which way is down?
Which of the following controls the orientation of your phone?
The system computes the orientation angles by using a device's geomagnetic field sensor in combination with the device's accelerometer. Using these two hardware sensors, the system provides data for the following three orientation angles: Azimuth (degrees of rotation about the -z axis).
How does your phone know which way is down?
The accelerometer detects acceleration in three directions—side-to-side, up/down, and forward/backward. Acceleration is the rate at which velocity changes with time. Essentially, the accelerometer is detecting movement. The movement is detected in relation to gravity.