Apple reportedly had issues with defects found in the connecting areas between the plastic and metal parts within the casings, which was caused by Catcher's anodizing process. The issues with the casings may take 2-3 months to fix, which may require Apple to rely on other supply partners.
Apple's 4.7-inch iPhone 6 is expected to go into mass production last month for a launch this fall. Reports have also suggested that Apple will also launch a larger, 5.5-inch version of the iPhone 6 at some point, with Bloomberg noting yesterday that Apple may launch both sizes of the device at the same time. In addition to a larger screen, the iPhone 6 is expected to include a thinner design, a faster A8 processor, an improved camera, and more.