Apple isn’t trying to build a better hinge. It’s trying to eliminate the need for one.
While Samsung, Google, and Motorola have spent years refining increasingly complex mechanical hinges for their foldable phones — multi-link assemblies with dozens of tiny parts designed to distribute stress across a flexible display — Apple appears to be taking a fundamentally different approach to the most persistent problem in foldable device design: the crease. According to recent reporting from AppleInsider, Apple’s forthcoming foldable iPhone will rely on advanced material science rather than mechanical engineering to address the visible fold line that mars every foldable screen on the market today.
The distinction matters more than it might seem at first glance. Every foldable phone sold today — from Samsung’s Galaxy Z Fold series to Google’s Pixel Fold to the OnePlus Open — carries a visible and tactile crease running down the center of its inner display. Manufacturers have minimized it over successive generations, but none have eliminated it. The crease remains a constant reminder that you’re using a compromised screen, and it’s the single biggest aesthetic objection consumers raise about foldable devices. Apple, a company that has built its brand on an almost obsessive commitment to visual and tactile perfection, apparently decided that shipping a product with a visible crease was unacceptable.
So it went looking for a different solution entirely.
The approach, as described by sources familiar with Apple’s development efforts and reported by AppleInsider, centers on the display materials themselves. Rather than engineering an elaborate hinge mechanism that bends the screen at a wider radius to reduce stress — the strategy Samsung and others have pursued — Apple has focused on developing or sourcing display substrate materials and cover layers that can withstand repeated folding without developing a permanent deformation at the fold point. The company has reportedly been working with suppliers on ultra-thin glass and polymer composites that maintain their structural integrity and optical clarity through tens of thousands of fold cycles.
This is a materials problem, not a mechanical one. And that reframing tells you a lot about how Apple thinks.
The hinge in a foldable phone serves two purposes. First, it’s the structural joint that allows the device to open and close. Second, and more subtly, it controls the bend radius of the display — how tightly or loosely the screen folds. A larger bend radius puts less stress on the display material, which reduces creasing but requires a thicker device when closed. A tighter bend radius allows for a slimmer profile but punishes the screen. Every foldable phone on the market represents a compromise between these competing demands, and the hinge is where that compromise is physically expressed.
Apple’s reported strategy suggests the company believes it can use materials that tolerate a tighter bend radius without creasing, which would allow for a simpler hinge design and a thinner overall device. If the display material itself doesn’t develop a permanent set at the fold, the hinge doesn’t need to do as much work to protect it. The mechanical complexity drops. The part count drops. The potential failure points drop.
That’s the theory, anyway.
In practice, developing display materials with these properties is extraordinarily difficult. OLED displays are layered structures — a stack of organic emitting materials, thin-film transistor backplanes, encapsulation layers, polarizers, and cover materials, each with different mechanical properties. Getting every layer in that stack to flex repeatedly without delaminating, cracking, or developing optical distortions is a challenge that has consumed billions of R&D dollars across the industry. Samsung Display, the world’s largest OLED manufacturer and a key Apple supplier, has been iterating on foldable display technology since before the original Galaxy Fold launched in 2019. BOE and CSOT in China have been racing to catch up. The materials science involved — particularly around ultra-thin glass cover layers and polyimide substrates — sits at the frontier of what’s commercially manufacturable.
Apple has been here before. When it introduced the ceramic Shield front cover on the iPhone 12, or the titanium frame on the iPhone 15 Pro, it was making material choices that competitors hadn’t prioritized. The company has a long history of investing in materials — from the unibody aluminum MacBook to the sapphire crystal Apple Watch face — and treating those investments as competitive differentiators. A crease-free foldable display would be the most ambitious material bet yet.
The timing of this device has been the subject of intense speculation. Analyst Ming-Chi Kuo, display supply chain consultant Ross Young, and Bloomberg’s Mark Gurman have all pointed to a foldable iPhone arriving as early as late 2025 or 2026. Recent supply chain reports suggest Apple has been working with Samsung Display and potentially LG Display on foldable OLED panels with enhanced durability characteristics. The device is widely expected to adopt a book-style form factor — folding like a book to reveal a larger inner screen — rather than the clamshell flip-phone design used by the Galaxy Z Flip or Motorola Razr.
But the form factor is almost secondary to the crease question. Apple’s entire pitch for a foldable iPhone will likely rest on the quality of the display experience. If the inner screen looks and feels like a regular iPhone display — flat, smooth, optically uniform — that alone would represent a significant leap beyond what competitors offer. And it would justify Apple’s years-long delay in entering the foldable market. The company watched Samsung iterate through five generations of the Galaxy Z Fold, each time improving but never fully solving the crease. Apple apparently decided to wait until it could skip that entire progression.
Not everyone is convinced Apple can pull this off. Materials scientists who work on flexible displays note that eliminating the crease entirely — not just reducing it — requires either a display material that has essentially zero plastic deformation under repeated stress, or a device design that avoids folding the display at all (which would defeat the purpose). Some industry observers have speculated that Apple might use a sliding or rolling mechanism instead of a traditional fold, but the reports from AppleInsider and others consistently describe a folding device. The crease-free claim, if Apple achieves it, would be a genuine first in the foldable phone category.
There’s also the durability question. Samsung’s foldable phones are rated for 200,000 folds, roughly equivalent to opening and closing the phone 100 times a day for five years. That rating is as much about the hinge mechanism as the display. If Apple is relying more heavily on the material properties of the display itself to prevent creasing, the fatigue life of those materials becomes even more critical. A display that looks perfect after 1,000 folds but develops a crease after 50,000 wouldn’t meet Apple’s standards — or its customers’ expectations.
And then there’s cost. Advanced display materials — particularly ultra-thin glass variants like Schott’s UTG or Corning’s experimental flexible glass compositions — are expensive to produce at scale. Adding novel polymer layers or hybrid glass-polymer composites to the display stack increases both material cost and manufacturing complexity. Apple has historically been willing to absorb higher component costs for flagship devices, passing some of that expense to consumers through premium pricing. A foldable iPhone is already expected to be Apple’s most expensive phone ever, with analyst estimates ranging from $1,799 to $2,499. If the crease-free display technology adds significantly to the bill of materials, that ceiling could go higher.
The competitive implications are substantial. Samsung has owned the foldable phone market for years, with the Galaxy Z Fold and Z Flip lines commanding the vast majority of foldable sales worldwide. But Samsung’s market position has been built partly on being first and partly on being alone — no competitor with Apple’s brand power and distribution reach has entered the category. If Apple launches a foldable iPhone that genuinely solves the crease problem, it doesn’t just compete with Samsung’s foldables. It redefines what consumers expect from every foldable phone. Samsung would face immediate pressure to match Apple’s crease-free display, which could require fundamental changes to its own display manufacturing processes.
Google, too, would feel the heat. The Pixel Fold (now Pixel 9 Pro Fold) has been a modest seller, and its display crease is among the most noticeable in the category. A crease-free iPhone would make Google’s offering look dated overnight.
The broader strategic picture is worth considering. Apple’s iPhone business, while still enormously profitable, has faced slowing unit growth for years. The smartphone market is saturated. Foldable phones represent one of the few genuine form factor innovations that could drive upgrade cycles and attract switchers from Android. But Apple couldn’t enter this market with a product that felt like a compromise — not with the brand expectations it has cultivated over nearly two decades of iPhone. The crease was the compromise. If Apple has found a way around it, the foldable iPhone becomes not just a new product but a statement about what the company demands from its hardware before it ships.
We don’t know yet whether Apple has fully succeeded. The device hasn’t been announced, let alone reviewed. Supply chain leaks and analyst reports paint an encouraging picture, but the proof will be in the hands of users who fold and unfold the thing thousands of times. What we do know is that Apple chose to frame the crease as a materials challenge rather than a mechanical one. That choice — chemistry over engineering, molecules over gears — may end up defining the next chapter of the foldable phone market.
Or it may not work at all. That’s the risk you take when you bet on science instead of iteration.
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