https://wattsupwiththat.com/2019/01/17/ ... KZ8BofnJtk
Normally the World Magnetic Model is updated every 5 years, but the North Magnetic Pole is changing position so fast, regular updates are now required.
Earth’s magnetic field is changing so quickly that researchers have been forced to update to the World Magnetic Model ahead of schedule. Developed by NOAA and the British Geological Survey, the model is widely used for precision navigation of devices ranging from nuclear submarines to the common smartphone. Your own phone may be affected.