
A new report highlighted by IT Home says Apple’s device business still depends on a deeply distributed Apple supply chain, making any attempt to move mainstream iPhone assembly back to the United States far less practical than political talking points might suggest.

The source article, based on reporting from AppleInsider, walks through the full production chain behind the iPhone and iPad, from core silicon and memory to screens, camera sensors, and final assembly. The basic argument is straightforward: Apple’s manufacturing model is built around suppliers spread across North America, Europe, and Asia, not around a single-country production setup.

On the processor side, Apple’s A19 Pro and M-series chips are still tied closely to TSMC’s manufacturing network. While some older chips such as the A16 Bionic can already be produced in Arizona, the latest leading-edge processes remain heavily constrained by law, capacity, and geography. That means the most important performance components for Apple’s current devices are still linked to overseas production.
The same pattern shows up across other parts. NAND flash is supplied by companies including SK hynix, Western Digital, Kioxia, and Samsung, while memory comes from Samsung, SK hynix, and Micron. For displays, Apple continues to rely mainly on Samsung Display and LG Display. Sony remains a long-time supplier of camera sensors, though Apple is reportedly exploring Samsung as an alternative in that area as well.
Final iPad manufacturing and iPhone assembly are just as global. Companies such as Foxconn, Pegatron, and Luxshare handle major production work across China, India, and other parts of Asia. Rebuilding that ecosystem inside the US wouldn’t just mean opening more factories. It would also require matching supplier density, logistics, labor specialization, and cost structures that have taken years to build elsewhere.
So even with tariff pressure and ongoing geopolitical debate, the broader takeaway from the report is that Apple can diversify parts of its footprint, but a full return of flagship-volume iPhone assembly to the US still looks unrealistic for now.