Is Apple's iPhone Ultra Fold Really Thinner Than A Pencil? We Did The Math

Apple is developing its first foldable iPhone, targeting a 4.5mm thickness when unfolded—thinner than any current iPhone and even slimmer than a standard pencil (7mm). The device, unofficially called the iPhone Ultra Fold, will use a near-creaseless Samsung Display panel with a 0.15mm crease depth and a 2.5-degree fold angle, outperforming competitors like Samsung’s Galaxy Z Fold 7. However, achieving this thinness required trade-offs: Face ID is replaced by Touch ID in the power button, the telephoto camera is omitted, and MagSafe magnets may be absent from the phone itself. The iPhone Ultra Fold will feature dual 48MP cameras (main and ultra-wide) and a 7.76-inch inner OLED display paired with a 5.49-inch outer display, both in a 4:3 aspect ratio. It will run on Apple’s A20 Pro chip, built using TSMC’s advanced 2nm process, with 12GB of RAM. Despite early reports of June 2026 mass production, delays have pushed the timeline to August, leaving a tight window for a September launch. Analyst Ming-Chi Kuo warns of potential supply shortages extending into 2027, suggesting limited availability at launch. The device’s back includes a protruding camera plateau, adding up to 4.5mm thickness locally, though the main body remains at 4.5mm. When folded, it measures between 9mm and 9.5mm. Apple’s focus on thinness appears intentional, with one analysis describing it as a ‘structural statement’ about the future of foldable phones. The iPhone Ultra Fold is expected to start at over $2,000, positioning it as a premium device in Apple’s lineup. Production challenges and component shortages may impact early availability, but Apple’s push for extreme thinness sets a new benchmark for foldable smartphones. The device’s design prioritizes form factor over some features, reflecting Apple’s emphasis on creating a sleek, high-end foldable experience.