Apple's first foldable demands unexpected hardware sacrifices. From Face ID to the 5x periscope telephoto, here are 10 staple iPhone features missing on iPhone Duo.
16 Sept 2026Verified Editorial
⏱4 Min Read
◫11 Verified Slides
◫Slideshow Mode
missing on iPhone Duo
10. Face IDTrueDepth facial recognition replaced entirely by a side fingerprint scanner.
9. Periscope ZoomDedicated periscope telephoto glass optics sacrificed to keep the folding halves thin.
8. Action ButtonThe programmable titanium shortcut button removed to preserve internal hinge space.
7. Camera ControlThe dedicated sapphire touch shutter and zoom slider left off the rail.
6. Variable ApertureMechanical aperture switching between bright light and cinematic portraiture.
