Apple designs iPhones, but dozens of companies manufacture the parts and assemble them

Apple does not own factories that build iPhones. Instead, Apple designs the phones and contracts with manufacturers around the world to make the components and put them together. The largest assembler is Foxconn, a Taiwan-based company that operates factories in China, Vietnam, India, and Brazil. Other major assemblers include Pegatron and Wistron, also based in Taiwan. These companies employ hundreds of thousands of workers and handle the final assembly of iPhones sold globally.

The supply chain for a single iPhone involves more than 200 suppliers. Some make the glass screen, others produce the battery, the processor, the camera modules, the memory chips, and the metal frame. Many of these suppliers are based in South Korea, Japan, Taiwan, and China. Apple maintains strict control over design and quality standards, but the actual manufacturing is spread across multiple countries and companies.

Key Takeaways

  • Foxconn, Pegatron, and Wistron are the three main companies that assemble iPhones, with Foxconn handling the majority of production.
  • iPhone components come from over 200 different suppliers located primarily in Asia, including South Korea, Japan, Taiwan, and China.
  • Apple designs the iPhone and sets manufacturing standards, but owns none of the factories where iPhones are made.
  • Most iPhones are assembled in China, though Foxconn also operates assembly plants in Vietnam, India, and Brazil.

Where iPhones are assembled

Foxconn's largest iPhone assembly facility is in Zhengzhou, China, where hundreds of thousands of workers assemble iPhones for global distribution. This single facility produces roughly half of all iPhones sold worldwide. Foxconn also operates assembly plants in Shenzhen and other Chinese cities, as well as in Hanoi, Vietnam, and Bangalore, India. In 2023, Apple began shifting some production to India through Foxconn and Wistron to reduce dependence on China.

Pegatron operates assembly facilities in Shanghai and Kunshan, China, and also has plants in Taiwan and Japan. Wistron assembles iPhones in Bangalore, India, and previously operated facilities in China. The shift toward India reflects Apple's effort to diversify its supply chain and reduce geopolitical risk, though China remains the dominant manufacturing location.

Who makes the key components

Processors (the A-series chips) are designed by Apple but manufactured by Taiwan Semiconductor Manufacturing Company (TSMC). TSMC operates the world's largest chip fabrication plants and produces chips for many technology companies.

Displays come from Samsung Display and LG Display, both based in South Korea. These companies manufacture the OLED screens used in most modern iPhones. Samsung also supplies some of the memory chips inside iPhones.

Batteries are made by companies including Sunwoda and BYD, both based in China. Apple also sources batteries from ATL (Amperex Technology Limited), also Chinese-owned. These suppliers produce the lithium-ion batteries that power iPhones.

Camera modules come from Sony, a Japanese company, which manufactures the image sensors. The lens assemblies and other camera components come from suppliers in Japan, South Korea, and China. Glass screens are supplied by Corning, a U.S. company, which produces the Gorilla Glass protective layer.

Memory and storage chips are made by Samsung, SK Hynix, and Micron Technology. These companies manufacture the RAM and flash storage that store your apps and photos. Wireless components including modems and antennas come from Qualcomm, Broadcom, and other suppliers.

How the supply chain works

Apple places orders with assemblers like Foxconn based on expected demand. Foxconn then orders components from hundreds of suppliers. These suppliers often have long lead times — some components must be ordered months in advance. When a new iPhone model launches, the ramp-up is coordinated across all these companies simultaneously.

Quality control happens at multiple stages. Component suppliers test their own products. Assemblers like Foxconn perform additional testing during assembly. Apple also conducts inspections at factories and tests finished phones before they ship. If defects are found, Apple can reject entire batches, which creates pressure on suppliers to maintain high standards.

Logistics is a major part of the operation. Finished iPhones are shipped from assembly plants to distribution centers, then to regional warehouses, and finally to retailers and carriers. A single iPhone may travel through five or six countries before reaching a customer.

Why Apple uses contract manufacturers instead of owning factories

Building and operating factories requires enormous capital investment and expertise in manufacturing operations. By using contract manufacturers, Apple avoids these costs and can scale production up or down quickly based on demand. If iPhone sales drop, Foxconn absorbs the impact, not Apple.

Contract manufacturing also allows Apple to focus on design, software, and marketing — the areas where the company has competitive advantage. Manufacturing is a different business with different skills, supply chain relationships, and labor practices. Outsourcing lets Apple concentrate resources on product innovation.

This model also spreads risk. If one factory has problems, Apple can shift orders to another assembler. If one supplier runs short on a component, Apple can source from an alternative. Vertical integration — owning everything — would make Apple more vulnerable to disruptions in any single location or process.

Labor and working conditions at iPhone factories

Working conditions at iPhone assembly plants have been a subject of public concern and investigation. Foxconn facilities in China have faced criticism over long hours, low wages, and worker safety. In 2010, a series of worker suicides at Foxconn's Shenzhen plant drew international attention and led to wage increases and improved conditions.

Apple publishes annual Supplier Responsibility Reports documenting working hours, wages, and safety conditions at factories in its supply chain. The reports show that most facilities meet legal requirements, though some violations are found and corrected. Apple has also pushed suppliers to reduce working hours and improve safety practices, though independent labor organizations argue that conditions remain difficult in many factories.

Wages at iPhone assembly plants are higher than average for manufacturing in China and India, but still low by U.S. and European standards. Workers typically earn between $300 and $500 per month, depending on location and experience. Assembly work is repetitive and requires standing for long shifts.

How iPhone manufacturing is changing

Apple is gradually moving some iPhone production out of China. In 2023, the company began assembling iPhone 14 models in India through Foxconn and Wistron. This shift is driven by geopolitical tensions between the U.S. and China, trade policies, and Apple's desire to reduce dependence on any single country. However, China will likely remain the dominant manufacturing location for years to come because of its established supply chain, skilled workforce, and manufacturing infrastructure.

Automation is also increasing. Foxconn has invested in robots and automated assembly lines to reduce labor costs and improve consistency. However, final assembly of iPhones still requires significant human labor because the work is complex and requires dexterity that robots have not yet matched cost-effectively.

Frequently Asked Questions

Are iPhones made in the United States?

No. iPhones are not manufactured in the U.S. All assembly happens in Asia, primarily China, with growing production in India and Vietnam. Some components like Gorilla Glass are made in the U.S., but final assembly does not occur here.

Does Apple own Foxconn?

No. Foxconn is an independent company owned by Terry Gou and his family. Apple is Foxconn's largest customer, but Foxconn also manufactures products for many other companies including Microsoft, Google, and Amazon.

Can I find out which factory made my iPhone?

Partially. You can see your iPhone's serial number in Settings > General > About. This number contains information about when and where it was made, but Apple does not publish a public database that translates serial numbers to specific factory locations. You can search your serial number online using third-party tools, though the results are not always accurate.

Why did Apple move some iPhone production to India?

Apple is reducing its dependence on China due to trade tensions, tariffs, and geopolitical risk. India offers lower labor costs, a large workforce, and government incentives for electronics manufacturing. However, India's manufacturing infrastructure is less mature than China's, so the transition is gradual.

How many people work in iPhone manufacturing?

Estimates suggest that over 1 million people work directly on iPhone manufacturing and assembly across all suppliers and assemblers. Millions more work in supporting roles like logistics, quality control, and component manufacturing. Exact numbers are difficult to verify because many suppliers work on multiple products, not just iPhones.