Smartphones sit within Technology & Semiconductors, the infrastructure of the modern economy and the information age built on top of it, a category with a real, cited scale: Global semiconductor market projected at $1.51T for 2026 (World Semiconductor Trade Statistics (WSTS)). Smartphones is one of 11 of the category's 20 items directly backed by WSTS/SIA semiconductor data, World Bank trade data, ITU statistics, and the International Federation of Robotics, rather than an editorial judgment call.
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Smartphones is 1 of 20 items in Technology & Semiconductors. See the full ranked list, or browse all 20 Human Endeavors categories.