While the tech world has been waiting for OpenAI to launch what it calls an AI phone, a Chinese AI startup nobody was watching just put one on stage. StepFun, a Shanghai-based artificial intelligence company founded in 2023 by former Microsoft executives, unveiled the StepX Neo at a brand event in Shanghai on July 13, 2026 describing it as the world’s first mass-market agentic smartphone built around a native large language model rather than AI features bolted on top of an existing operating system.
Ice Universe, a Chinese tech expert, initially revealed the device on X before it was officially confirmed through StepFun channels. The StepX Neo’s main distinction from every other AI-enhanced phone on the market is structural: it does not run Android with an AI layer on top. It runs Step AOS, a completely customized operating system constructed from Android, Linux, and RTOS components, with AI agent functionality embedded at the system level rather than as an application.
“Exclusive: OpenAI hasn’t released an AI phone yet, but StepX Neo has already beaten it to the punch. StepX has officially unveiled StepX Neo, the world’s first Agentic Phone built around a native large language model. Powered by the native Step AOS operating system and the built-in AI agent Amoo.”~Ice Universe
Meet Amoo: The AI Agent That Lives Inside The Phone
The StepX Neo is powered by Step Amoo, an artificial intelligence assistant. Unlike Siri, Google Assistant, and Galaxy AI, which all function as software layers that pass information to apps, Amoo is integrated directly into Step AOS at the system level and can execute multi-step tasks across apps, web services, and the phone’s built-in tools using a single natural language instruction.
The practical difference matters. Ask Amoo to plan a trip, and it will search flights, compare hotels, check your preferences from previous bookings, make reservations across platforms, and compile an itinerary without the user manually switching between apps at each step. The agent learns preferences over time, automatically prioritising pet-friendly flights if that is what the user has booked before, or selecting a preferred restaurant when making a reservation.
Most importantly, Amoo performs all fundamental tasks entirely offline. It does not require continual network connectivity, giving it a significant benefit over cloud-based voice assistants in locations with poor signal. For traveling abroad, the Neo can translate live chats, text messages, phone calls, and camera-captured text in 32 languages, including regional dialects, send flight check-in reminders, indicate visa requirements, and help with customs forms all without a data connection.
Step Edge, a foundation model StepFun developed specifically to operate within a phone’s compute limits, powers Amoo on the device, and the company claims it outperforms comparable edge models across 29 benchmarks, though independent verification of those specific benchmark results has yet to be provided.
“StepFun’s StepX Neo runs Step AOS — rebuilt from Android, Linux and RTOS, not just Android with AI layered on. The built-in Amoo agent handles multi-step tasks across apps offline. Partners include Alipay, Ctrip, Didi, Meituan, WPS, CapCut and Baidu.”~Gizmochina
App Partners, Security Framework, And The Hardware Nobody Has Seen Yet:
StepFun has lined up a significant roster of Chinese platform partners for the StepX Neo ecosystem. Integrations include Alipay, Meituan, Didi, Ctrip, Baidu, JD.com, Amap, WPS Office, CapCut, and Weibo covering payments, ride-hailing, food delivery, travel booking, maps, office productivity, and content creation. If these integrations work as described, Amoo could complete tasks like ordering food, booking a cab, or editing a video entirely within a single agent interaction.
On security, a valid concern when an AI agent has system-level access to apps, files, personal data, and payment systems, StepFun revealed an architecture in which all agent operations take place within a trusted execution environment. Permissions are issued only when necessary and removed right after use. Every action is auditable, and mistakes can be reversed with a single tap. StepFun has co-published an agent security whitepaper with the Shanghai AI Laboratory, and the StepX Neo has passed Level 3 of China’s national AI terminal intelligence grading standard currently the highest level available for testing.
On the hardware side, StepFun confirmed a dual-camera setup and a secondary interactive display on the rear of the device for quick access to notifications and AI features without unlocking the main screen. Full hardware specifications, pricing, and availability have not yet been announced. The company has provided no information on launch timing or international rollout.
“StepX Neo comes with Step AOS, an operating system specifically designed for AI agents, and a built-in AI agent called Amoo. This phone thoroughly integrates large-scale AI models, the operating system, and hardware, creating an entirely new agentic smartphone category.”~RAIHAN HAN
China Moves Fast While OpenAI’s Phone Is Still Years Away:
The StepX Neo’s unveiling places it ahead of every Western competitor in the race to build a genuinely agentic phone. OpenAI’s AI hardware project developed with former Apple design chief Jony Ive is not expected to ship until early 2027 at the earliest, and even that device is described as a smart speaker with a camera rather than a phone. Apple Intelligence, Samsung Galaxy AI, and Google’s Gemini integration all remain software upgrades to existing Android and iOS frameworks rather than ground-up agentic redesigns.
China’s ByteDance and ZTE did launch the Nubia M153 in December 2025 with Doubao AI integrated at the OS level, but StepFun argues that device relied on Android with AI layered in whereas Step AOS was built from the ground up as a native agentic operating system. The distinction matters if true, though independent technical verification of that claim awaits the commercial launch.
Hardware supply chain backers including Longcheer Technology, OmniVision Integrated Circuits Group, and ZTE give the StepX Neo more credibility than a typical concept announcement from a startup. Whether Amoo can reliably perform complex real-world tasks and whether the Step AOS can compete with Android’s app ecosystem will be the real test once the device reaches consumers.
