How Amazon Measures Phone Success

Amazon.com's new Fire phone might be less about the phone and more about what its computing power can do in a few years, when it's built into futuristic devices like internet-connected contact lenses, as I wrote today on the Upshot. But in the meantime, Amazon still needs to sell some phones. The challenge is that by now, many people have already chosen their smartphones, and have doubled down in Apple's or Google's world as a result. For many, the complication and cost of switching to an Amazon phone is too much, and the benefits too small.