Why Apple wants us to fold the phone again

Once, ending a phone call felt like a small dance. Your thumb would find the hinge, give a gentle push with your wrist, and then the conversation would come to a neat close with a satisfying snap. It felt decisive, in a way that simply tapping a red icon hasn’t quite captured. The call was finished, the phone was shut, and for a little while, your availability was perfectly clear.

A titanium frame and hinge support a device that houses two batteries, several cameras, and an operating system that constantly detects which screen is active