How the iPhone Duo compares to other folding phones

Apple's foldable phone is finally here - well, almost. The iPhone Duo, coming October 23rd, follows in the footsteps of past folding devices from Android phone makers like Samsung, OnePlus, and Google, with a $1,999 price tag that sits just above the Pixel 11 Pro Fold and Galaxy Z Fold 8.

While its hardware bears similarities to its competitors, the iPhone Duo is one of a few models that takes a passport-like approach. The aspect ratio is the same on the inside and outside screens, and it's even usable with some apps while partially folded. The interior screen has a special outer layer, which along with its hinge design, makes the interior …