About Compass Reliability

The following experiment shows the reliability limits of the heading system embedded in the iPhone 6 used to test the application.

We read the values returned by the heading system for the angle 0°, 30° and 90°.

. ¦ 0° ¦ +30° ¦ +90°

0 min ¦ 130° ¦ 161° ¦ 223°

5 min ¦ 129° ¦ 161° ¦ 224°

10 min ¦ 130° ¦ 162° ¦ 223°

15 min ¦ 130° ¦ 160° ¦ 222°

20 min ¦ 131° ¦ 162° ¦ 226°