iPhone Duo sidebar blocks 15 percent of screen
The fixed dock on the new device’s 5.4-inch cover display reduces usable space, a limitation not present on the Galaxy Z Fold 8.
By Sarah Montgomery ·
A fixed sidebar on the iPhone Duo occupies 15 percent of the device’s 5.4-inch cover display. This design choice leaves a substantial portion of the small outer screen unavailable for primary content. The hardware itself measures 5.4 inches, but the software interface dictates how much of that area users can actually see.
The limitation arises from a dock positioned on the right side of the display. While Apple intended this feature to streamline navigation, the placement creates a large vertical strip of dead space. Users cannot move or hide this element. Consequently, the effective viewing area for apps and media is reduced by one-sixth of the total screen real estate.
Allison Johnson of The Verge noted the device’s usability challenges during an initial review. She observed that the iPhone Duo is harder to manage with one hand compared to the Samsung Galaxy Z Fold 8. The Fold 8’s physical proportions are taller and narrower. This shape allows users to reach the outer screen more easily. The iPhone Duo’s wider form factor makes one-handed interaction more difficult.
The comparison with the Galaxy Z Fold 8 is stark. That device uses a gesture-based navigation system. This approach leaves very little of the outer screen occupied by interface elements. Even when set to use a navigation bar instead of gestures, the Fold 8 wastes significantly less space than the iPhone Duo. The difference in usable area is immediately visible in side-by-side comparisons.
Apple’s strategy for the iPhone Duo involves shrinking the available space to stretch media vertically. This mimics the aspect ratio of a standard slab smartphone. The goal is to make content appear taller on the small display. However, the Galaxy Z Fold 8 demonstrates that leaving the space free for main content is a viable alternative. The Fold 8 continues to succeed in the market without this specific constraint.
The iPhone Duo is currently available to consumers, though stock is limited. Samsung’s Galaxy Z Fold 8 is also on the market and has maintained strong sales. The debate over software usability on foldable devices remains active. Early adopters are reporting these interface differences as they transition between the two flagship products.
The core issue is not the size of the panel, but the software overlay. The 15 percent reduction in usable space is a fixed cost of the current iOS implementation on this hardware. No hardware changes can alter this software-driven limitation. The device is in users’ hands now, and the visual impact of the sidebar is a primary point of discussion.
