StepFun has put itself in the spotlight with a bold claim: it is preparing what it calls the world’s first “AI agentic phone.” The announcement arrived before OpenAI’s own smartphone rumors had time to build momentum, which made the move stand out even more.
The startup, founded in 2023 by former Microsoft employees in Shanghai, is positioning the device as a new kind of smartphone rather than a simple AI add-on. For now, though, the name StepX Neo carries more weight than any hardware details, because the company has shown direction more clearly than a finished product.
What StepFun Says StepX Neo Will Do
According to StepFun, the phone will run Step AOS and include a personal assistant called Step Amoo. The assistant is described as a personal intelligent agent that can be spoken to in natural language, similar to a conventional AI chatbot.
The company also says Step AOS creates a native runtime environment for intelligent agents, with the design focused on three core AI-agent challenges: memory, decision-making, and execution. StepFun adds that memory retrieval can happen in as little as 15 ms, while the device is intended to perform autonomous tasks efficiently even when offline.
| Element | Name | Description |
|---|---|---|
| Device | StepX Neo | The phone StepFun is teasing |
| Operating system | Step AOS | Presented as an OS designed for intelligent agents |
| AI assistant | Step Amoo | A personal agent that can be spoken to in natural language |
| On-device AI model | Step Edge | Claimed to lead 29 benchmarks |
Several Technical Questions Are Still Unanswered
StepFun says cloud support may still be used for more complex tasks, even though the system is built around on-device AI. The company also says personal data will remain on the phone during those processes.
That on-device component is said to be called Step Edge, and StepFun claims it ranks first across 29 authoritative benchmarks. However, the company has not explained which benchmarks were used or which competing models were compared.
GSMArena notes that it remains unclear whether Step AOS is a genuinely new operating system or simply a layer on top of Android. StepFun describes it as combining Android, Linux, and RTOS, but the explanation still does not provide a complete technical picture.
Design Clues And Early Partnerships
The phone is also said to feature a rear LED dot matrix display, a visual element that brings to mind Nothing phones. Even so, no device specifications have been announced yet.
StepFun has already introduced an early partner list for the device, and it is heavily centered on Chinese apps and services. The names mentioned include Meituan, Alipay, Amap, Baidu, Didi, and Ctrip.
For now, the overall announcement still reads more like a marketing push than a finished product reveal. StepX Neo is drawing attention, but the information released so far leaves the actual smartphone itself largely undefined.
| Partner Category | Examples Named by StepFun |
|---|---|
| Apps and services | Meituan, Alipay, Amap, Baidu, Didi, Ctrip |
