Which accessories actually fit the iPhone Duo?
iPhone Duo's unique foldable design means most traditional iPhone accessories are incompatible with the device. The phone's dimensions differ significantly from standard iPhones, which manufacturers use to design cases, mounts and other add-ons, making compatibility a key consideration for owners looking to protect their investment.
The Duo measures 164.6 by 117.8 by 5.2 millimetres when unfolded and 84.1 by 117.8 by 11.3 millimetres folded. USB-C peripherals and most wireless chargers work fine, but traditional cases, lens accessories and tempered glass screen protectors won't fit. Manufacturers like ESR, Mous and Spigen have designed new accessories for the device, including cases that protect the hinge and use the fold as a stand. Screen protection requires flexible TPU or PET films, which can handle repeated folding without cracking, rather than rigid glass.
- Most traditional iPhone accessories incompatible; Duo needs foldable-specific designs
- Tempered glass screen protectors crack when folded; use TPU or PET film instead
- USB-C chargers and wireless charging work with the foldable device
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Apple's iPhone Duo is a foldable smartphone. Unlike traditional iPhones which have a single fixed shape, the Duo can be folded and unfolded, giving it very different dimensions in each state.
Smartphone accessories—such as cases, screen protectors, mounts and lens attachments—are designed to fit standard iPhone dimensions. Because the Duo has a different shape, most conventional accessories do not fit, which is problematic for owners needing to protect their devices.
Some accessories still work with the Duo despite its different shape. USB-C chargers and wireless chargers are generally compatible, but anything designed to fit snugly around the phone's body—such as a protective case or glass screen protector—will not fit.