Screen assemblies, circuitry, batteries, etc. Both Apple and Samsung have moved to serialized chips/circuits to lock out 3rd party replacement (even if the part is identical). Folks have done swaps of OEM components to different iPhones and they don't just fail - they sporadically glitch. [1] It's categorically anti-consumer behavior.
They also often buy up proprietary access to caps, ICs, and other mainboard components so none are available to the 3rd party market. Independent computer repair shops have to tear down old (non-serialized) machines or rely on parts from questionable origin to even be able to attempt repair.
They also often buy up proprietary access to caps, ICs, and other mainboard components so none are available to the 3rd party market. Independent computer repair shops have to tear down old (non-serialized) machines or rely on parts from questionable origin to even be able to attempt repair.
[1] https://www.ifixit.com/News/45921/is-this-the-end-of-the-rep...