The iPhone Duo, a new foldable smartphone inspired by Apple's iPad Mini, has incorporated features from Apple's tablet lineup, including support for the Apple Pencil. During a recent product launch event, Apple announced that the stylus would be compatible with the iPhone Duo "later in the year." According to a recent report by Bloomberg, this compatibility is expected to be available "towards the end of 2026," likely by December. Making the Apple Pencil work with the iPhone Duo involves more than just plugging it in. The device has two screens, and ensuring the stylus functions seamlessly on both requires updates to the phone's software and extensive testing. Apple is currently working on these changes, but the process is complex and could take time. This is partly because using a stylus on a smartphone has been a delicate issue for Apple, especially since the late Steve Jobs once said, "if you see a stylus, they have failed," implying that Apple prefers touch-based interaction over stylus use. Originally, the iPhone Duo was planned to include its own stylus to emphasize its hybrid smartphone-tablet design. However, Apple ultimately decided against this idea, fearing it might affect the device's comfort and usability. Bloomberg reports that another reason for abandoning the built-in stylus was "technical problems" that arose several months before production began. These issues led Apple to choose a simpler solution: allowing the iPhone Duo to work with the existing Apple Pencil from third-party manufacturers instead. The delay in adding full Apple Pencil support is likely due to a minor delay in the device's boot-up process. This technical hiccup probably explains why the iPhone Duo did not include the necessary code for the Apple Pencil when it first launched. Apple is now working to resolve this, aiming to provide full stylus compatibility later in the year.