
There's a thriving market for unofficial, aftermarket iPhone parts, and in China, there are entire massive factories that are dedicated to producing these components for repair shops unable to get ahold of parts that have been produced by Apple.
The entire Apple device repair ecosystem is fascinating, complex, and oftentimes confusing to consumers given the disconnect between Apple, Apple Authorized Service Providers, third-party factories, and independent repair shops, so we thought we'd delve into the complicated world of Apple repairs.
The Aftermarket Factories
Our exploration of the repair ecosystem was inspired by a video sent to us by a trusted source that MacRumors has worked with in the past, who captured footage inside one of the many facilities in China that are dedicated to creating aftermarket iPhone parts.
This is a small scale operation where workers appear to be creating an aftermarket touch screen digitizer for the iPhone, a thin plastic component that attaches to the LCD through a flex cable and allows physical touch on the screen to be transformed into digital input, allowing the iPhone's processor to translate your touch into system commands.
In addition to producing touch screen digitizers for the iPhone, given the clean room setup, the facility pictured in the video likely also attaches them to LCDs sourced from other factories to produce a full iPhone display assembly that can then be sold to iPhone repair shops around the world.
While this is a small facility, our source tells us that the factory, which employs approximately 10 people, is able to produce up to 10,000 display components per month, with setup and equipment for a factory this size costing approximately $90,000, a minor investment for a major return.

iPhone X display assembly with touch screen digitizer visible, via iFixit
Larger factories, such as those that produce aftermarket LCDs for iPhones and other smartphones, are huge operations that can output millions of components per month. Companies like Tianma, Longteng LCD, Shenchao, and JingDongFang are well-known in the repair world for producing the aftermarket LCDs used by many repair shops. If you search for display components on auction sites like Alibaba, these are the names that pop up over and over again.
These are not small, no name factories producing LCDs - these are major operations creating components by the millions, which should give you an idea of the kind of demand there is for aftermarket components across the globe. It costs hundreds of millions of dollars to purchase the kind of equipment needed to produce aftermarket LCDs.
"It's a crazy industry that involves millions of dollars, probably into billions a year. It's just absolutely nuts," said our source.
The Demand for Aftermarket Parts
Companies that produce aftermarket LCD components are doing so because there's significant demand for these parts in repair shops around the world. Shops that are not Apple Authorized Service Providers are not able to source parts from Apple because Apple limits OEM parts to the repair shops that it partners with.
With no way to purchase components from Apple, sourcing parts from third-party suppliers is the only option for independent repair shops that want to be able to offer iPhone repairs to their customers.
There are more than 15,000 independent repair shops in the United States, all of which are sourcing components from suppliers that receive them mainly from these factories in China. In the South Bay Area alone, where Apple's Cupertino headquarters is located, there are hundreds of non-AASP locations that can fix a broken iPhone. And that's just the United States. There are thousands more independent repair shops around the world.

An independent iPhone repair shop near Cupertino, California
Aftermarket Parts Quality
When thinking of third-party components, you might assume that the parts produced in facilities like the one in the video are far inferior in quality to actual Apple components, which is also the viewpoint of the source that sent us the video.
That's not always entirely true, though, according to many of the repair shops that we spoke with.[The Chinese factories] are basically dishing junk out into the world. Apple's own screen may fail only if you've dropped it. Won't even fail up to 5, 10 years. But the fake screens usually fail between two to three years. Usually.
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Article Link: Inside the iPhone Repair Ecosystem: Where Do Replacement Parts Come From and Can You Trust Them?
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