Smartphones can tell where you are even when GPS is off. Imagine your phone has a special map that knows how strong the Wi-Fi or cell tower signals around you are. When you walk into a new place, it checks those signals and compares them to its map, like a detective finding out where you are based on clues.
Examples
- Your phone knows you're at home because it sees your Wi-Fi network.
- You walk into a coffee shop, and your phone tells you it's there based on the Wi-Fi signal.
- Even underground in a subway station, your phone can still figure out where you are using nearby cell towers.
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See also
- Why Do Smartphones Feel So Cold When You Use Them?
- How Do ‘Smartphones’ Know When to Wake You Up?
- Why Do Smartphones Get So Hot?
- Why Do Smartphones Use So Much Battery When You're Just Watching a Video?
- Why Do Smartphones Get So Hot When You Use Them?
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