IQE plc operates primarily through two main business segments: Wireless and Photonics, having recently phased out its smaller CMOS++ division. The Wireless segment provides compound semiconductor materials for radio frequency devices used in mobile networks, 5G infrastructure, and connected devices. The Photonics segment supplies materials for applications that transmit or sense light, such as 3D sensing, advanced lasers, and infrared imaging for aerospace and security markets. Headquartered in Cardiff, Wales, the company maintains a global manufacturing and R&D footprint with facilities across the United Kingdom, the United States, and Taiwan. As a specialist merchant epiwafer supplier, IQE does not design or fabricate the final chips, but instead focuses on the precision manufacturing of foundational materials tailored to exact customer specifications.