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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First of all, signals dont continue endlessly, every inch it travels, it leeches energy into the environment. So say a cell tower can only reach maybe a kilometer before the signals get too weak to be interpreted. Kinda like how a shout is only audible at a certain distance.
Second, signals dont know where to go. They are actually just broadcasted meaning every phone can actually receive the data meant for you, this is basically how wireless wiretaps work but of course much more complicated due to the existence of encryption.
Lastly, interception actually happens if they use different frequencies, thats why the old technology like am/fm radios have specific radio frequencies assigned to them so that they dont mess up each other’s signals.
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