At 40 years old, the cellphone has become the world’s most important consumer tech product

Like a lot of important consumer technology, the cellphone got its start as a luxury item for businesspeople who wanted the ability to take important phone calls while out of the office. But 40 years after its invention, the cellphone has become the single most important piece of consumer electronics in the world, acting not only as a communications device for voice calls but as a low-cost way for millions of people around the world to access the Internet without needing more expensive personal computers. As companies such as Samsung (005930), BlackBerry (BBRY), Nokia (NOK) and perhaps even Apple (AAPL) move more aggressively to bring low-cost smartphones to emerging markets, it’s easy to see how mobile phones have become the



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