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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For being an ELI5 thread there are a lot of not ELI5 answers (as is tradition).
Short answer is that you have a radio in your pocket and that radio picks up lots of different stations depending on where you are. Your pocket pal picks which station it likes the most and sends your bleep bloops to the internet. When you move your little buddy picks another station and viola, you have the bulk of all human knowledge in your hands you whippersnapper
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