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How does a mobile phone work? Have you ever wondered: how can the voice from a tiny phone fly across mountains, across oceans, even jump to a satellite and back in the blink of an eye? From microphones that “translate” sound waves into data, to radio antennas, undersea fiber optic cables, and then the lightning-fast 5G technology, all combine to create a seemingly obvious miracle: a phone call or video call. But behind it is a whole universe of science, technology and future prospects: holograms, thought transmission, and quantum communication. If you like this video, you can watch more related videos below 🥰: 1. Why do batteries need a lot of rare metals Watch here:    • Tại sao PIN cần nhiều kim loại hiếm?   2. Why do we still use coal instead of solar energy? Watch here:    • Tại sao vẫn sử dụng Than thay vì Năng Lượn...   3. Why Sand is so valuable to the Earth Watch here:    • Tại sao Cát lại rất có giá trị với Trái Đất?   #Why #phone #5G #technology #wifi #optical #telecommunications #future #science #communication