I don't want to be overly dismissive -- I'm sure this is a huge engineering achievement -- but I just don't get it. A mobile phone, where battery life is precious and a big differentiating factor between devices, seems like the absolute last place you'd want to mine bitcoin. Manufacturers have spent years optimizing for battery life - why would they want to shoot themselves in the foot? What consumer in their right mind would buy a phone advertised as, "your battery will die much sooner, but hey, you don't have to use your credit card as much"?

Perhaps I'm wrong, and I'd love to be corrected. But I don't see the point.