How does smartphone 📱 know where you are ? How mobile phones find that i am in this place or that place . Lets go , GPS Global positioning system . This helps to find where you are . There are 30 GPS satellite in our world to find where we are . The all satellites transfer the signal to earth with the speed of earth . The speed of light is 300,000 per second so the GPS satellite can find where we are in just 1 sec . Lets see how the GPS satellites work. 1 GPS satellite will pass radius for some distances . It is tough to find . So the other satellite radius will overlap on the 1 st radius . now also it is tough to find . So the third satellite radius will over lap on the first two satellite . From this the GPS find where we are . so for one person 3 GPS satellites are used . Although the map does not show accurate where we are due the tall buildings the radius will reflect
Bye friends ,
LMES
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