The iPhone 18 is already influencing significant changes within the semiconductor supply chain. Samsung Electronics is ramping up its production of image sensors, which has led a key testing partner to invest over $120 million in new equipment. Doosan Tesna, a South Korean semiconductor testing company, plans to spend $123 million on test systems from companies like Japan’s Advantest and Samsung subsidiary Semes. This investment, representing over 21% of Doosan Tesna’s total assets, will be executed in phases from 2026 to March 2027.
The investment is believed to be linked to Samsung’s new image sensor production facility in Austin, Texas, which is set to provide components for the iPhone 18 in 2027. This development marks Samsung’s return to Apple’s camera image sensor supply chain after nearly a decade, potentially challenging Sony’s long-standing dominance. Apple is reportedly diversifying suppliers following delays in Sony’s deliveries between 2023 and 2024.
Doosan Tesna, which specializes in post-fabrication electrical testing of wafers, is shifting from Teradyne to Advantest equipment. Advantest systems are known for their use in high-performance chips, indicating that Samsung’s new sensors for Apple may require advanced verification processes.
Samsung’s Austin production line is part of Apple’s strategy to reduce dependence on Japanese suppliers and increase U.S.-based production. If Samsung’s sensors meet Apple’s standards, the company could become a major supplier for Apple alongside Sony. Doosan Tesna’s significant financial commitment underscores the global semiconductor investment shifts underway in anticipation of Apple’s future iPhones.
