This is actually quite an interesting article. I never thought that much about using old phones. For some reason I was thinking about people using their personal device or purchasing phones specifically for mining. It's quite interesting that it was actually Samsung itself that did it. I'm sure they have the most access to phones. Haha. They said that 8 Galaxy S5 phones could mine better than a standard desktop computer. It still seems like it would take a long time to get more value out of the phones than you could sell them on eBay. Using old phones for different projects is really cool though. I liked the fish tank bit at the end of the article.