With iPhone Air 2 rumored to be less than a year away, Apple could turn to better cooling or more cameras to make the ultra-thin phone even more popular than the original. Here's what's been rumored, and some other possibilities. iPhone Air is a great phone, but the second-generation could be even better Despite what some vocal online detractors say, iPhone Air has its fans. I'm certainly counted among them. Early reports said Apple's thinnest phone was a "failure" and that the second-generation