Even that often isn’t possible with the most recent Apple devices. Even genuine parts often can’t be used (or work only in a degraded mode) unless authenticated

Even that often isn’t possible with the most recent Apple devices. Even genuine parts often can’t be used (or work only in a degraded mode) unless authenticated by Apple’s System Configuration tool. That means you can’t swap many parts, even between identical devices, and expect them to work properly. Presumably this news means that Apple is making the configuration tools more widely available to third parties, but I’ll bet they will only authenticate parts supplied directly by Apple, not parts scavenged from other devices! (There is perhaps some logic to all this: it makes phones less desirable to thieves if they can’t be broken down and resold for parts)