Apple Explores Under-Display Face ID for Future iPhone Duo Models

Apple is reportedly developing significant upgrades for its next-generation foldable smartphone, the iPhone Duo, including under-display Face ID technology that could change how users unlock their devices. According to a report by Bloomberg’s Mark Gurman, Apple is already testing prototypes of a potential successor featuring facial recognition sensors concealed beneath the outer display. The development follows the introduction of Apple’s first foldable iPhone, which uses Touch ID rather than Face ID for biometric authentication. Although the current device introduces a new design and a larger screen experience, the absence of facial recognition has attracted criticism from some early reviewers. Apple’s reported efforts suggest that the company is exploring ways to combine its foldable design with the convenience of its established facial authentication system. However, the proposed features remain under development and have not been confirmed for a final commercial release.

One of the main challenges facing Apple’s engineers is the limited internal space available in a thin foldable smartphone. Unlike conventional iPhones, foldable devices require complex hinges, flexible displays and carefully arranged internal components. Integrating Face ID requires additional hardware capable of accurately recognising a user’s face, making the engineering challenge particularly difficult. Apple’s current iPhone Duo relies on a fingerprint sensor incorporated into its side button, providing an alternative authentication method without requiring the same arrangement of facial recognition components. The reported prototypes indicate that Apple is investigating whether smaller sensors and under-display technology could overcome these limitations. If successful, this approach could allow the company to maintain a slim exterior while delivering a more familiar unlocking experience to users who prefer Face ID.

Beyond facial recognition, Apple is reportedly considering other improvements for future generations of its foldable smartphone. These may include a dedicated Action button and advances to the camera system, although details remain limited. The Action button could provide faster access to selected functions, while improvements to the camera hardware could address some of the compromises associated with fitting components into an unusually thin device. Apple’s challenge is to introduce these features without significantly increasing the phone’s thickness, weight or manufacturing complexity. The company must also balance battery capacity, durability and performance while developing a folding mechanism that can withstand repeated use. Because these products require extensive engineering and testing, features appearing in early prototypes are not guaranteed to reach the final retail version.

The reported developments also reflect the wider competition in the premium smartphone market, where manufacturers are working to make foldable devices more practical for everyday use. Companies must persuade customers that larger displays and flexible designs offer meaningful advantages over traditional smartphones. Convenience, camera quality, battery life, durability and software support remain important factors influencing purchasing decisions. For Apple, integrating Face ID into a foldable device could help maintain consistency across its product range while addressing concerns from users accustomed to unlocking their iPhones with facial recognition. Nevertheless, the company must demonstrate that its technology works reliably through the display and does not compromise security or everyday performance. A successful implementation could also influence expectations for future foldable devices across the wider smartphone industry.

Ultimately, Apple’s reported work on under-display Face ID highlights the engineering challenges involved in combining advanced hardware with increasingly compact smartphone designs. The possibility of bringing facial recognition to a future iPhone Duo could make the device more convenient and reduce one of the differences between Apple’s foldable and conventional iPhone models. However, consumers should treat the reports as indications of Apple’s development plans rather than a confirmed product announcement. The company has not publicly guaranteed when the technology will arrive, and its release could depend on testing results, manufacturing readiness and design decisions. If the feature eventually reaches consumers, it could become an important step towards foldable smartphones that offer both innovative form factors and the familiar functionality users expect from premium devices.