There are billions of mobile phones all communicating with each other sending wireless signals across the globe. How does each signal know where to go exactly, and how are they not intercepted by other signals?
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Wireless signals go in all directions. It’s just a matter of having hardware somewhere within range that can decode that signal.
How does the sun know to light up the Earth? It doesn’t, it just shines out, and the Earth gets in the way.
How can someone hear you when you talk? Your voice radiates out in all directions, and their ears pick up the pressure waves, and their brain decodes those waves into sounds and words to get meaning.
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