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

I remember being in a Saab about a decade ago. That thing had a built in GPS where the map used the distance travelled and turning radius of the car to find out where it was in the tunnel. My phone lost signal but the car did just fine.