This is a terrific story, well told by Jason Koebler and the Motherboard team. From the video description:
Every year there’s a race to become the first to tear down the phone, with teams from around the world flying to Australia—where it’s first released—to compete to be the first to look inside the world’s most coveted new phone.
This video is riveting, well worth your time. If this sort of thing interests you, you might check out this Twitter thread, where Jason tells the story about dropping his MacBook, cracking the screen, and encountering iFixit for the first time.