Apple plans to adopt a 1.4-nanometer A22 Pro chip for its high-end iPhone models in 2028. The primary supplier will remain TSMC, but Apple is considering involving Intel in part of the manufacturing to diversify supply chain risks. The current iPhone 17 series uses TSMC's 3-nanometer process, with models like the iPhone 18 Pro expected to switch to a 2-nanometer process upon their release in September 2026. The 1.4-nanometer process is anticipated to be applied to some high-end models in 2028. TSMC has been developing the 1.4-nanometer node for years, and compared to the 2-nanometer process, it is expected to deliver a 15% performance improvement at the same power consumption or a 30% reduction in power consumption at the same performance level. However, the advancement in process technology increases manufacturing difficulty and costs, with advanced production capacity also becoming more limited.