Keep your iPhone.
Enjoy Duo.
Preparing your iPhone…
Reserve your spot
Keep your iPhone.
Enjoy Duo.
Estimated price
In development
A dual-screen flip case for the iPhone you love.
One iPhone.
A little more possibility.
iPhone2Duo is a dual-screen flip case concept: a display on each side of the cover, designed to give the iPhone you already love more room.
Room for more.
The inner screen is designed to extend your workspace beside your iPhone.
How the second screen works →
Still in view.
Close the cover. The outer screen is designed to keep your current screen in view.
See what the preview shows →
Your iPhone stays.
The phone comes out. Your familiar iPhone, with a new possibility around it.
Keep your phone or upgrade? →A few things to know.
Is iPhone2Duo a phone or a case?
iPhone2Duo is an independent flip case concept for an existing iPhone, with a display on each face of its cover. The iPhone itself does not fold. The 3D animation illustrates the intended experience; it is not a demonstration of working hardware.
Which iPhones can I preview?
The model picker includes iPhone 18 Pro, iPhone 18 Pro Max, iPhone 17, iPhone 16 and iPhone 15. iPhone 18 Pro is the default preview. These are design previews, not confirmed production compatibility. You can check your phone with Apple’s iPhone identification guide or compare the official iPhone 18 Pro specifications.
Will it mirror or extend my screen?
The design envisions the outer display showing your current screen when the case is closed. When opened, the inner display adds space alongside the iPhone rather than simply duplicating it. Connection methods, power requirements and iOS integration have not been finalized.
How much will it cost, and can I order it?
The target price is $199 USD. iPhone2Duo is in development and is not available to purchase. The reservation list is free, with a goal of 1,000 people before pre-orders open. Joining registers your interest; it does not charge you or guarantee delivery. Final pricing and timing are still to be confirmed.
What happens when I join the list?
We save your email address and selected iPhone model for reservations and launch updates. You can join the reservation list without paying now. Pre-order details will be shared by email when available.
Is this an Apple product?
No. iPhone2Duo is an independent design project and is not affiliated with or endorsed by Apple. The Apple links above are references for identifying and comparing the phones shown in the preview.