World's Most Expensive Phone Costs $15 Million

British designer Stuart Hughes is a name that is more often than not associated with the glitzy and expensive lifestyle, as he has come up with plenty of weird and pricey designs in the past, including an iPad that had a real T-Rex bone in it. Well, this time around, Stuart Hughes has churned out what could very well be the most expensive smartphone in the world, where he calls it the iPhone 5 Black Diamond, as it carries a sticker price of approximately $15 million after conversion.

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