Likewise, how does GPS in cars work without Internet?
When you have a data connection, your phone usesAssistedGPS, or A-GPS. This uses the locations ofcell phonetowers and known Wi-fi networks to figure out roughlywhere you are.A-GPS doesn't work without dataservice, but theGPS radio can still get a fix directly fromthe satellites ifit needs to.
Also, how does the GPS work?
The Global Positioning System (GPS) is anetworkof about 30 satellites orbiting the Earth at an altitude of20,000km. These signals, travelling at the speed of light,areintercepted by your GPS receiver, which calculates howfaraway each satellite is based on how long it took for themessagesto arrive.
Cell tower triangulation has been atraditionalway to determine a cell phone's location. Today,mostcell phone tracking apps work by tapping intotheGlobal Positioning System (GPS), which is a networkofsatellites maintained by the U.S. DepartmentofDefense.