Image: Apple The official unveiling of the iPhone Air isn’t a surprise, considering that the phone had been rumored for about a year. Along with the rumors came concerns about Apple making such a thin iPhone–namely, whether the iPhone Air sacrifices battery life for thinness. That doesn’t seem to be the case. During the event, Apple stated that the iPhone Air has “all-day battery life” and showed how basically the entire area of the phone below the camera “plateau” is battery, but...