The world’s biggest chipmaker is pushing back the start of 4nm chip production at its new facility in Phoenix, Arizona, to 2025, blaming labor shortages. Apple has said that it intends to eventually source chips for its iPhones and MacBook models from the Taiwan Semiconductor Manufacturing Company (TSMC) plant in the US, while Nvidia and AMD have also committed to using its production capacity. The chipmaker’s first Phoenix-based fab , which began construction in 2021, was originally projected