Apple launched the first iPhone Air last year as a deliberate step toward extreme thinness. At just 5.6 millimeters thick, the device used a titanium frame and careful internal engineering to deliver a phone that felt unlike anything else in the lineup. It sold well, roughly twice as strong as the model it replaced in some markets. Yet feedback quickly highlighted two areas where the bold design created clear compromises: a single rear camera and battery life that struggled to match expectations during long days of use.
