Apple and Samsung Push Foldables Toward 4:3 Screen Format

A Convergence in Cupertino and Seoul

The foldable smartphone segment is bracing for its most consequential design inflection yet. Apple is preparing to launch its first foldable iPhone, while Samsung Electronics is reshaping its foldable lineup around a wider display format, according to supply chain and industry sources. Both companies are gravitating toward the 4:3 aspect ratio, a departure from the elongated screens that have characterized most foldable devices to date.

The timing of this parallel shift is notable. Apple has long stayed out of the foldable race, watching rivals iterate through hinge mechanisms, crease mitigation, and durability challenges. Samsung, meanwhile, has dominated global foldable shipments since introducing the Galaxy Fold in 2019. Their simultaneous pivot toward a squarer unfolded screen suggests a shared conviction that earlier form factors have left user experience on the table.

Why 4:3 Matters for Foldables

A 4:3 aspect ratio more closely resembles a traditional tablet when the device is unfolded, optimizing the canvas for productivity applications, split-screen multitasking, and media consumption that does not require cinematic letterboxing. Current foldable phones, many of which use aspect ratios closer to 5:4 or even narrower, can feel cramped when running side-by-side apps or editing documents.

For Apple, the move aligns with its iPad design language and the broader ecosystem it has built around iPadOS and continuity features. A foldable iPhone with a 4:3 unfolded display would allow the company to position the device as a true hybrid, bridging the iPhone and iPad product lines without cannibalizing either.

Samsung's reported shift is equally strategic. The company has experimented with multiple foldable formats, including the clamshell Galaxy Z Flip series and the book-style Galaxy Z Fold lineup. By standardizing around a wider aspect ratio, Samsung could simplify its supply chain, reduce panel costs through economies of scale, and deliver a more differentiated experience against Chinese rivals such as Huawei, Oppo, and Xiaomi, which have largely stuck to narrower screens.

Supply Chain Implications

The transition to 4:3 displays will ripple through the component ecosystem. Panel manufacturers, including Samsung Display and BOE, will need to retool production lines to accommodate the new dimensions. Hinge suppliers and frame manufacturers will face similar adjustments, as a wider device demands different mechanical tolerances and stress distribution.

For app developers, the shift presents both opportunity and complexity. A more standardized aspect ratio could simplify interface design and reduce fragmentation, but it also requires rethinking how apps scale across folded and unfolded states. Apple's entry into the category may accelerate developer adoption, given the company's track record of driving ecosystem alignment through hardware launches.

Market Timing and Competitive Pressure

Apple's foldable debut has been the subject of speculation for years, with prototypes reportedly tested internally since at least 2020. The decision to finally bring a foldable iPhone to market suggests the company believes the technology has matured sufficiently in durability, battery life, and user experience. It also reflects mounting pressure from Android competitors, which have steadily improved their foldable offerings and captured a growing share of the ultra-premium segment.

Samsung, for its part, faces intensifying competition in Asia, where local brands have launched foldables at lower price points and with aggressive feature sets. A design refresh centered on a wider display could help Samsung reassert its premium positioning and justify higher average selling prices.

What Comes Next

The convergence on 4:3 does not guarantee uniformity. Apple and Samsung are likely to differentiate through software, camera systems, materials, and ecosystem integration. But the shared aspect ratio establishes a new baseline for the category, one that prioritizes productivity and versatility over the novelty of simply folding a phone in half.

If both companies execute well, the 4:3 format could become the de facto standard for book-style foldables, much as 16:9 once dominated traditional smartphone displays. The next twelve months will reveal whether the industry follows their lead or fragments further into niche form factors.