If you look at apps such as Google Maps app on Android, it display a gps icon, that when clicked starts the gps. However, if I don’t click that image, and I move, it tracks me anyway. So what is the purpose of they button which we see in so many apps? Does the phone rely on GPS only when that button is pressed, or do they use the button, because they start the gps every x minutes, so if you click the button, it start it immediately?
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If you look at apps such as Google Maps app on Android, it display
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The GPS radio is not started automatically.
When the GPS is off, the phone uses nearby WiFi nodes to find the location. That works pretty well in areas where there are a lot of known WiFi nodes, but the GPS is more exact, and works pretty much everywhere.