Eli5:Why is it that cell phones , with their tiny antenaes are able to download files at LTE speeds inside concrete buildings from cell towers kilometers away yet getting wifi to work behind a corner is an exercise in frustration?
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The answer is they don’t. Commercial concrete buildings usually have multiple “micro cell” sites installed throughout the building to support cell phone data and voice communication. If this wasn’t done the density of cellphones would quickly overwhelm most cell phone towers in cities.
Cell phone towers have limits to the number of simultaneous connections. 5G requires even shorter distances than LTE, so there has been a major increase in the number of cell towers from previous needs. Here’s some good apps and websites to see just how many are around you. You won’t believe how many are located at Sport Stadiums
https://www.waveform.com/blogs/main/cell-tower-mapping
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