At Mobile World Congress 2026 in Barcelona, Tecno showcased a super-thin modular smartphone concept that attaches various components to transform its functionality. The base device, measuring 4.9mm thick, connects to modules including advanced camera lenses and battery packs. While innovative, the company describes it as a concept unlikely to reach consumers.
Mobile World Congress 2026, held in Barcelona from March 2 to 5, featured Tecno's modular phone concept as a highlight at the company's booth. The core unit is a slim Android smartphone at 4.9mm thick, equipped with a screen, basic camera module, and four low-profile pogo-pin connectors on the back. These allow attachment of various modules via magnetic connections, enabling users to customize the device for different needs.
Among the displayed modules were two families in different colorways. Camera options included a chunky telephoto lens offering up to 20x zoom with manual focus, though it showed some glitches during demonstrations. This module features a large image sensor and physical controls, turning the phone into a compact camera that uses the display as a viewfinder. Other camera attachments comprised ultrawide lenses, a streamlined periscope telephoto, and an action cam that connects via Wi-Fi for independent use. Additional modules demonstrated included a 3x camera lens, wireless microphone, wallet, speaker, lanyard connectors, grip clips, and an antenna that folds out to enable walkie-talkie functionality without cell service or Wi-Fi.
Power management relies on modular batteries, with the base unit containing a tiny cell. Users can stack 3,000mAh battery packs, reaching up to around 10,000mAh capacity—surpassing many mainstream smartphones. Notably, the device lacks a traditional USB-C charging port; instead, a dedicated charging module attaches to the connectors, with further modules stackable on top.
Tecno emphasized that this remains strictly a concept, with no plans confirmed for commercialization. Past modular efforts, such as Google's Project Ara over a decade ago, Motorola's Moto Mods, and LG's G5 modules, faced challenges in efficiency and market adoption. Tecno, primarily active in markets outside Western Europe and the US, has a history of presenting thrilling ideas at trade shows that do not always materialize, similar to Xiaomi's external camera unit from the previous year and Red's unfulfilled Hydrogen One from 2018.
