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Sony Ericsson K750/K750i: ~15 million
In just over a year, Sony Ericsson is estimated to have sold around 15 million K750 mobile phones. Not quite smartphone, not quite feature phone; it was a high-end device that appealed to many. So many in fact that it amounted around 15 million during the time it was on sale. In one quarter alone, Sony Ericsson sold close to 14 million units; with the K750/K750i taking one of the prime spots in the top five list of best selling global phones. The company sold more than 103 million phones in 2007, showing just how popular the company in its day.
Image: Sony Mobile (formerly Sony Ericsson)