An iPhone-quality OLED display is always going to cost $150+ new as part. That alone is enough value to steal a phone for parts.
Personally, serialization that alerts the user "you have unauthorized parts, if your battery catches on fire or your screen has crappy colors it's not our fault" -> this is good, I am in favor of this, serialization that disables the device or features -> bad.
Personally, serialization that alerts the user "you have unauthorized parts, if your battery catches on fire or your screen has crappy colors it's not our fault" -> this is good, I am in favor of this, serialization that disables the device or features -> bad.