> And this way we don't need to compromise the shell of the phone with seams and things that can fail

The ancients managed to design around replaceable batteries, I don't think these techniques have been entirely lost to time.

The ancients also designed ways to carry humans without gas or electricity, but I don't really want to regress to those techniques.

They also designed with cheap shells that felt loose before a year was out, and offered exactly zero water and dust protection so if your device got wet, it was considered out of warranty.