iPhone Duo has no Action Button — Silent mode moves to Control Center
Apple’s first foldable skips the Action Button entirely. Specs show volume, Camera Control, and a Touch ID side button — with Silent mode via Control Center, the first modern iPhone without a physical mute control.
Apple’s iPhone Duo is missing something every recent iPhone shipped with: an Action Button. MacRumors flagged the omission from Apple’s technical specifications diagram — and the consequence for Silent mode.
What’s on the edges instead
Per Apple’s Duo specs layout (as reported by MacRumors), the physical controls are:
- Volume up / down at the top
- Camera Control and a side button on the right
- USB-C at the bottom
- Microphones and speakers at the top and bottom
There is no Action Button on the left edge above the volume keys — the slot occupied on iPhone 18 Pro and earlier Action Button models.
