Why does GPS work when underground and under big buildings but radio signals, Wi-Fi, and cell phone signals struggle?

Question

Why does GPS work when underground and under big buildings but radio signals, Wi-Fi, and cell phone signals struggle?

In: 4773

Answer 1

GPS are dependent on line of sight to three or more satellites.

When I start my rental car in the :ogan AP garage, there is no connectt til exiting.