Apple’s first foldable iPhone is skipping Face ID entirely, and that decision has raised eyebrows among people who have spent years getting used to a face scan unlocking their phone in an instant. Apple has answered that concern by borrowing one of the Mac’s most convenient security features and building it directly into iPhone Duo.
Instead of a front camera notch or Dynamic Island housing facial recognition hardware, iPhone Duo relies on Touch ID built into the side button. That placement means the fingerprint sensor works the same way whether the device is folded shut or opened out into its full tablet-style display, so there’s no awkward moment of fumbling to find a sensor depending on how you’re holding the phone.
Apple Watch Unlock Comes to iPhone Duo
The more interesting addition is the option to skip Touch ID altogether if you already wear an Apple Watch. Apple has carried over the automatic unlocking feature long-time Mac owners already rely on, where your paired Apple Watch authenticates you the moment you pick up the device, without any button press or fingerprint scan required. On a Mac, that feature has quietly become one of the most appreciated conveniences in the entire ecosystem, and now it’s making its way to a foldable iPhone for the first time.
For anyone who already wears an Apple Watch through the day, this effectively removes authentication friction from iPhone Duo altogether. You open the phone, and it’s already unlocked, provided your watch is on your wrist and within range. It’s a smart workaround for a device that couldn’t accommodate Face ID hardware without compromising the thin, dual-screen design Apple was clearly chasing.
Why Apple Left Face ID Off iPhone Duo
Face ID needs a fairly specific hardware stack, including infrared cameras, a dot projector, and flood illuminators, all mounted in a fixed position relative to your face. Fitting that into a foldable chassis with two separate display halves would have added bulk and complexity that Apple evidently wasn’t willing to accept for its first attempt at this form factor. Falling back to Touch ID in the side button, paired with Apple Watch unlock as a backup convenience layer, lets Apple keep the device thin while still offering more than one way to get past the lock screen.
iPhone Duo Pre-Order and Release Date
Apple confirmed the rollout timeline alongside these details. Pre-orders for iPhone Duo open at 5:00 a.m. Pacific Time on Friday, October 16, giving early buyers a full week before the device reaches stores and doorsteps. Availability begins on Friday, October 23, when the first units start shipping to customers and appear on shelves at Apple Store locations.
Anyone who already owns an Apple Watch and has been on the fence about iPhone Duo now has one more reason to consider it seriously, since the two devices will work together in a way that feels far more polished than a simple fingerprint sensor on its own.
