Foxconn produces at least half of the Iphones around the world, source: https://www.businessinsider.com/apple-iphone-factory-foxconn-china-photos-tour-2018-5 ht

Foxconn produces at least half of the Iphones around the world, source: https://www.businessinsider.com/apple-iphone-factory-foxconn-china-photos-tour-2018-5 https://www.businessinsider.com/apple-iphone-factory-foxconn... Lumentum etc. are also some of Apple's largest parts suppliers.