In 1995, sales of pagers were booming among Japan’s teenagers, and NTT Docomo’s decision to add the heart symbol to its Pocket Bell devices let high school kids across the country inject a new level of sentiment (and cuteness) into the millions of messages they were keying into telephones every day. Docomo was thriving, with a bona fide must-have gadget on its hands and market share in the neighbo
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