How Does Your Phone Know Where You Are?

Your phone knows where you are by talking to satellites in the sky. It sends messages and gets replies, then uses those replies to figure out your location, like a game of hide-and-seek with the whole world!

How it works

Think of GPS as a team of helpers in the sky. They all say, 'I see you!' at the same time, and by looking at how long their messages take to reach your phone, your phone can guess where you are.

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Examples

Your phone uses GPS satellites like a detective using clues to find where you are.
When you open Google Maps, your phone is chatting with satellites in the sky to figure out where you are.
Imagine your phone calls three friends who are all around the world, they tell it how far away they are, and that helps your phone know exactly where it is.

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Categories: Technology · GPS· Smartphones· Location Services · Text is available under the Creative Commons Attribution-ShareAlike License.