The Apple iPhone Duo is a foldable smartphone, and its working mechanism is not explicitly explained in the provided evidence. However, the evidence does mention that it is a $2,000 device, suggesting it is a high-end product with advanced features.
The evidence does not provide detailed information on how the iPhone Duo works, but it does discuss accessory compatibility. It mentions that the iPhone Duo is compatible with certain accessories, but it does not specify what those accessories are or how they work with the device.
The article focuses on the compatibility of accessories with the iPhone Duo, rather than explaining its internal workings. It is likely that the iPhone Duo has a complex mechanism that allows it to fold and unfold, but this information is not provided in the evidence.
In summary, the evidence does not provide a detailed explanation of how the Apple iPhone Duo works, but it does mention its compatibility with certain accessories and its high-end price point.