The New York Times says that iPhone include code to identify when repair components are bought from Apple — and to intentionally fail if alternatives are used.
An Apple repair toolkit
Apple famously used to object to all “right to repair” moves to make it allow iPhone owners to go to independent repairers, to the extent that it allegedly got legislation watered down. It then launched its own repair service, and also backed California’s right to repair bill.
Apple’s iPhone parts pairing is making the company billions
Apple’s iPhone parts pairing is making the company billions