Inside Xiaomi's Automated Factories, Where Smartphones Take Six Seconds and Tours Draw Crowds

Six Seconds for a Smartphone, a Month for a Visit

Xiaomi's Smart Factory in Beijing's Changping district produces a flagship smartphone approximately every six seconds. The facility covers 81,000 square meters, cost CNY 2.4 billion, about USD 330 million, and began operating in February 2024. Its annual production capacity exceeds 10 million phones.

Another measure of demand is forming outside Xiaomi's production lines. Free factory tours have become so sought after that visitors face waits of about a month, while scalpers sell access for as much as $300. Around 100,000 applicants compete for roughly 200 places through a lottery.

The attraction brings together two parts of Xiaomi's transformation: factories capable of making sophisticated products at speed, and a public eager to see those machines at work. Parents bring children as young as six to watch robots assemble smartphones and electric vehicles, hoping the experience will kindle an interest in engineering.

For founder and chief executive Lei Jun, the factories also answer a longstanding complaint that Xiaomi merely assembles technology developed by others. The company is building greater control over design, research, production and testing across smartphones, cars and home appliances.

Automation remains only part of the picture. At Changping, 220 employees work alongside machines, checking quality, responding to faults and carrying out delicate tasks such as cleaning camera lenses under microscopes. Xiaomi's manufacturing story combines rapid production, extensive testing and human oversight, even inside a facility associated with the idea of a factory that can run in the dark.

Why Families Are Queuing to See Robots

Beijing visitors are adding industrial sites to itineraries that might otherwise focus on ancient landmarks. Xiaomi's free guided tour lasts 60 minutes: a 40-minute ride through technology exhibition halls, followed by 20 minutes watching production, where approximately 100 workers oversee nearly 700 robots.

Visitors can see an electric vehicle emerge every 76 seconds, while smartphone production moves faster still. Around the campus, expansive buildings connect through landscaped courtyards. Rabbit mascots, a flying-pig sculpture symbolizing dreams becoming reality, and giant company logos reflected in water features make the surroundings part of the attraction.

Ambitious parents, locally described as "tiger moms," see the visit as an early introduction to technology. For Xiaomi, allowing families to watch production also builds familiarity with its brand and introduces products to potential future buyers in an increasingly competitive electric vehicle market.

The tourism rush gathered momentum after February product launches in which 10,000 SU7 Ultra vehicles sold within two hours. It also fits government projections that industrial attractions could receive 20 million visitors annually by 2027. Factory visits are becoming both displays of national technological pride and opportunities for companies to build lasting customer loyalty.

What the Six-Second Production Figure Means

Changping's 81,000 square meters are roughly equivalent to eleven football fields. Inside that space, Xiaomi has shortened its production line while increasing the number of phones it can turn out each hour.

A conventional comparison uses approximately 450 employees on a production line stretching 600 meters to make 300 devices an hour. Xiaomi's line runs for 310 meters, uses 220 workers and produces 600 devices an hour. On those figures, hourly output doubles while the workforce is roughly halved.

The factory's automation rate is 81%, with several critical processes reaching 100%. Robots perform repetitive operations with precise, consistent movements, while workers remain available for inspection and intervention.

The six-second benchmark describes individual phones completing critical production phases. The annual output figure of more than 10 million units corresponds, at sustained operational capacity and averaged across the year, to roughly one device every 3.15 seconds. The figures describe different production measures: the completion pace at particular stages and output averaged over a full year.

Production begins with surface-mount technology, a process that places tiny electronic components directly onto printed circuit boards. These boards provide the connections that allow a phone's electronic parts to work together. Xiaomi's equipment positions the components with accuracy measured in microns.

Robotic arms can transfer as many as 40 mainboards at once into testing systems arranged in drawers. That approach delivers a 60% efficiency gain over older technology using robotic arms with more limited capacity. Dozens of functional checks run simultaneously to identify defects before foam, steel plates and cushioning pads are added to protect fragile components.

Lei has described Changping as one of China's most advanced mobile phone factories and stressed that most of its equipment was developed within Xiaomi. The claim places the machinery itself, as well as the phones it makes, at the center of the company's argument about its technical abilities.

How a Dark Factory Works

Industry specialists use the term "dark factory" for highly automated manufacturing environments that can operate without lighting, heating or air conditioning provided for human comfort. Machines can run 24 hours a day without shift changes or breaks, reducing interruptions and variation associated with manual work.

Changping applies that concept with 968 pieces of equipment developed by Xiaomi and its own manufacturing software. Automated carts travel along tracks, carrying components to larger robotic arms. The movement of materials and the work of machines are coordinated as parts of one production system.

The Xiaomi Hyper Intelligent Manufacturing Platform acts as the factory's control center. Developed entirely within the company, it brings together production information and the systems needed to respond when something changes.

Large displays show daily output, yield rates and efficiency. Yield is the share of products that meet the required standard. A panoramic view in three dimensions follows operations from circuit board production to final assembly, helping staff see where work is progressing and where attention is needed.

When the platform detects a deviation, it triggers an automatic alarm and technicians intervene. Its early detection tools also identify potential equipment faults before they occur. Predictive analytics uses operating information to anticipate trouble, helping reduce lost production time and wasted materials.

Xiaomi says 96.8% of the factory's hardware was developed internally, alongside 100% of its manufacturing software. Those figures concern the equipment and software used to manufacture products, giving the company control over how its production system operates.

Advanced filtration and positive-pressure airflow support automatic dust removal at the micron level. Keeping air pressure higher inside the controlled space helps maintain clean conditions for handling tiny electronic parts and limits contamination associated with human activity.

Changing Models Without a Week of Downtime

Xiaomi's modular manufacturing platform allows a production line to switch to a new model in ten hours, compared with transitions lasting a week at traditional facilities. A modular system uses sections that can be adjusted or rearranged, making it easier to change production requirements.

The factory also adjusts to changes in materials. If weather conditions alter the viscosity of adhesive, meaning how thick it is and how easily it flows, artificial intelligence recalculates pump pressure to maintain the quality of the bond without human intervention.

Fast adjustments matter because a phone factory must do more than repeat one operation. It has to keep components moving, maintain precise assembly conditions and respond when a new model requires a different production setup. Xiaomi's platform connects those tasks with continuous monitoring.

Why Lei Jun Wants to Leave the Assembly Label Behind

Xiaomi's early phones relied on Qualcomm chips, Samsung displays and Sony cameras, with assembly handled by outside manufacturers. That arrangement helped create a perception that the company lacked core technology of its own, a criticism Lei has described as a persistent personal grievance.

Dong Mingzhu, chairperson of rival Gree Electric Appliances, publicly questioned Xiaomi's technical foundations. Their rivalry has also appeared in recent social media disputes over air conditioner sales rankings and service commitments.

Lei has responded by pursuing vertical integration, which means bringing more stages of creating and making a product under the same company's control. Xiaomi president Lu Weibing describes the goal as a complete industrial closed loop covering design, research and development, production, and verification.

Lei, Xiaomi's founder and chief executive, explained on social media how criticism of its technical capabilities affected him and why the new factories mattered:

Many people hold biases and stubbornly think Xiaomi lacks technology and is merely an assembly factory," Lei Jun stated on social media. "These voices once made me fall into severe self-doubt. But after the commissioning of Xiaomi's smartphone smart factory and automobile smart factory last year, such voices almost disappeared.

The shift also matters financially. Technology companies can receive different market valuations from contract manufacturers, affecting investor confidence and share performance. Xiaomi's strategy of producing nearly all components internally seeks greater control over quality and pricing while supporting competition with Tesla in electric vehicles and Apple and Samsung in premium smartphones.

The factories give Xiaomi a visible way to demonstrate that strategy. Visitors see production equipment, investors see spending on manufacturing capabilities, and customers encounter products whose development and testing increasingly sit within the company's own operations.

Three Manufacturing Hubs and a Wider Expansion

Changping's smartphone plant sits alongside Xiaomi's automotive facility in Beijing's Yizhuang area and its newly operational Smart Home Appliance Factory in Wuhan. Together, the three hubs extend the company's manufacturing ambitions across phones, vehicles and household equipment.

The Wuhan factory covers 500,000 square meters and cost CNY 2.5 billion. It produces a premium air conditioner every 6.5 seconds and uses artificial intelligence for visual quality inspection across 100% of production. Operations began just 336 days after groundbreaking.

Wuhan also addresses a specific controversy. Consumers had noticed that Xiaomi air conditioners were manufactured by Sichuan Changhong, prompting jokes that buying directly from Changhong would be more economical. Establishing its own appliance factory gives Xiaomi another response to questions about who makes its products.

The milestones stretch from the opening of Changping to the company's financial and tourism ambitions:

• February 2024: The CNY 2.4 billion smartphone factory in Changping began operating.
• 2024: Xiaomi's full year of research and development spending became the comparison for its investment during the first three quarters of 2025.
• February product launches: Sales of the SU7 Ultra reached 10,000 units within two hours, helping fuel interest in factory visits.
• Third quarter of 2025: Research and development spending reached a quarterly record of CNY 9.1 billion.
• April 24, 2026: Xiaomi's manufacturing expansion includes smartphone, automotive and newly operational appliance hubs.
• 2027: Government projections put annual visits to industrial attractions at 20 million.

Where People Still Matter on the Production Line

Changping's 220 employees remain essential despite extensive automation. They inspect devices, respond to anomalies and undertake tasks requiring especially careful handling. Cleaning camera lenses under microscopes takes place in specialized clean rooms.

The combination of human work and automated production achieves a 99% yield rate, compared with the stated industry standard of 98%. In simple terms, the factory's figure means 99 out of every 100 devices meet the required production standard, compared with 98 under that benchmark.

Testing starts early. After surface-mount equipment places components on the boards, motherboards undergo inspections through multiple channels to check their functions against specifications. Each back panel is fitted before the phone passes through water-resistance checks and inspections of its appearance.

Final testing uses 49 stations developed by Xiaomi. They examine antenna performance, audio quality, camera functions, display calibration, Bluetooth connectivity and sensor accuracy. These checks cover how a phone communicates, captures images, presents information and responds to its surroundings.

Aging test chambers can hold 2,400 smartphones at the same time. They simulate extended use across different environments to assess battery lifespan and stable performance. The chambers also reduce workers' prolonged exposure to harsh testing conditions while shortening testing time.

Finished phones undergo comprehensive performance checks covering power consumption, antennas, audio, cameras, displays and sensors. Final retesting comes before packaging. The seven-stage production process supports the standards expected of flagship models priced around €2,000, while retaining the flexibility needed for complex final assembly work.

Markets, Cameras and the Spending Behind the Factories

Xiaomi's manufacturing investment accompanies changes in its smartphone market position. In China, its share reached 15% in 2025, an increase of four percentage points from a year earlier. Those figures put the earlier share at 11%.

Global share dipped slightly to 13%, while European share rose by one percentage point to 20%. The company held third place behind Apple and Samsung in the premium segment. Europe therefore moved in a different direction from the slight decline in its global share.

Malaysia is another strong market, with Xiaomi holding a 21% share. The company also led Southeast Asia. Its position in these markets supports its effort to become a premium alternative to established smartphone brands.

The Barcelona unveiling of the 17 Series flagship, developed with Leica, connects that premium push to imaging. At the factory, camera testing spaces include staged living rooms, restaurants in a Chinese style and indoor amusement areas. Camera systems are tuned for everyday situations ranging from daylight with strong contrasts to dim interiors.

Xiaomi's research network extends beyond its production lines. The company operates more than 730 laboratories across 11 cities globally, covering over 40,000 square meters. Its Beijing Campus Laboratory serves as the flagship facility.

Research and development spending reached CNY 23.5 billion in the first three quarters of 2025, nearly matching the expenditure for all of 2024. During the third quarter alone, investment reached a record CNY 9.1 billion, up 52.1% from a year earlier.

Third-quarter revenue rose 22.3% to CNY 113.1 billion, while adjusted net profit reached CNY 11.3 billion. Those financial results sit alongside the company's investment in factories, laboratories and internally developed production technology.

Xiaomi's expansion brings its commercial and manufacturing ambitions together. Faster lines increase output, testing supports premium products, and public tours turn otherwise hidden production processes into a brand attraction. Human inspectors and technicians remain part of the operation, even as machines take on more of the work.

Key Points

• Xiaomi's Changping smartphone factory began operating in February 2024 after a CNY 2.4 billion investment and has annual capacity exceeding 10 million phones.
• The factory's six-second production benchmark accompanies an 81% automation rate and a line producing 600 devices an hour with 220 workers.
• Approximately 100,000 applicants compete for about 200 factory tour places, with scalped access selling for as much as $300.
• Xiaomi developed 96.8% of the factory's hardware and all of its manufacturing software internally.
• Quality checks include 49 test stations and aging chambers holding 2,400 phones simultaneously, supporting a 99% yield rate.
• The company's manufacturing hubs cover smartphones in Changping, vehicles in Yizhuang and home appliances in Wuhan.
• Xiaomi spent CNY 23.5 billion on research and development during the first three quarters of 2025, while its smartphone shares reached 20% in Europe and 21% in Malaysia.