There's been a waterfall of leaks surrounding the iPhone Fold (or, as some are calling it, the iPhone Ultra ) for months. Now those rumors have culminated in a high-fidelity mockup of Apple's folding iPhone appearing on YouTube channel Unbox Therapy. During the video, host Lewis Hilsenteger reveals the second such mockup he's received of the device that could go toe-to-toe with the Samsung Galaxy Z Fold 8 as the best foldable phone you can buy if it launches this September. iPhone Fold ULTRA (Apple's Folding iPhone) Early Look - YouTube Watch On But unlike Samsung's flagship foldable, this mockup is true to the passport-style aspect ratio Apple is rumored to be pursuing. The iPhone Ultra/Fold is therefore noticeably shorter and wider than a typical Z Fold. However, Apple's work with the 5.7mm thin iPhone Air looks to be paying off, with Unbox Therapy's mockup measuring just 4.6mm thin. When folded, that becomes 9.18mm, which is just a hair thicker than the 8.82mm thickness of the iPhone 17 Pro .…