According to Wikipedia’s entry on world population, there are about 6.6 billion people on Earth. According to market research firm, Strategy Analytics, 1.1 billion cell phones were sold in 2007. That means, that assuming that no one had a mobile before, 1/6 of the people in the world would now have one. Of course, that’s not the case, and it’s pretty easy to assume that well over that number currently have cell phones. Pretty amazing. It wasn’t that long ago (early 90s) that cell phones were these heavy brick-sized devices that sat in your car and were hardly portable. We’ve certainly come a long way.

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