Imagine your phone is like a radio. When you're near a radio tower, it can pick up the signal and play music, even if there's no Wi-Fi around. This happens because phones use cellular networks, big towers that send signals to phones over long distances, just like how radios work from home to the car.
Examples
- Your phone still works when you're in the car because it connects directly to nearby towers.
- You can watch a video on your phone while hiking without any internet connection.
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