Why Your Phone’s GPS Drifts in Cities and Tunnels — and How to Fix It
Your blue dot lands on the wrong sidewalk, hops between skyscrapers, or freezes the moment you enter a tunnel. That doesn’t mean your phone is defective. In open terrain, a smartphone’s GPS typically lands within a radius of about 4.9 meters, according to the U.S. government’s official GPS resource. In a dense city, signals bounce … Read more