At MWC 2025, Xiaomi unveiled a groundbreaking concept product—the “Xiaomi Modular Optical System,” featuring a magnetically removable lens. This system includes a modified Xiaomi 15 paired with a lens module housing a 100MP M43 sensor and a 35mm F1.4 large-aperture lens.
Later in the day, Realme introduced its own “interchangeable lens concept phone.” Unlike Xiaomi’s magnetic approach, Realme’s design integrates a 1-inch sensor directly into the phone’s body, connecting to an external lens via a screw mount and adapter ring. This setup enables an impressive 10x lossless optical zoom.

From a technical standpoint, Xiaomi’s modular system resembles Sony’s QX1 mirrorless camera, while Realme’s concept mirrors Xiaomi’s 12S Ultra Concept from three years ago, both maintaining a traditional mirrorless structure.
Comparing Optical Solutions:
Xiaomi: Large sensor + large-aperture fixed-focus lens
Realme: Mid-sized sensor + large-aperture zoom lens
With these groundbreaking innovations, the question remains: Will modular smartphone cameras become the future of mobile photography, or will they remain a niche technology for enthusiasts?