It's the way of things. When things are new the tech can be understood and seen. You also have to know how to fix it early on and because it is simple you usually cloud. Old cars, the first electric devices, hell even some of the first radios were being built in the field. Fixing a phone looks as close to magic as most normal humans see. Everything is so damned small and complicated even the smallest part would be difficult to replicate and replace. I love old tech because you could grasp the whole with your mind and see it work.