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Introduction
For years, foldable smartphones represented the future of mobile technology, but that future came with one major compromise: thickness. Consumers loved the idea of carrying a phone that could instantly transform into a tablet, yet many hesitated because early foldable devices were noticeably bulky and heavy compared to traditional flagship smartphones.
Samsung has spent nearly a decade refining its foldable lineup, gradually eliminating the drawbacks that once limited mainstream adoption. With the upcoming Galaxy Z Fold 8 series expected to debut at Galaxy Unpacked, the company appears ready to achieve something that once seemed impossible. Today’s Galaxy Z Fold devices are approaching the dimensions of Samsung’s beloved Galaxy Note series, proving just how dramatically foldable technology has matured.
Samsung’s Foldable Journey Has Changed Everything
When Samsung introduced the original Galaxy Fold in 2019, it represented one of the biggest innovations in smartphone history. It wasn’t perfect, but it showed the world that foldable displays could become a reality.
The biggest criticism
Despite that compromise, early adopters embraced the technology because they believed they were experiencing the future of smartphones.
The Galaxy Note Legacy Lives On
Although Samsung officially discontinued the Galaxy Note lineup after 2020, its influence continues today.
The Galaxy Note
From the original Galaxy Note in 2011 through the Galaxy Note 20 Ultra in 2020, Samsung consistently refined the design while making each generation thinner and more comfortable to carry.
The original Galaxy Note measured 9.65mm thick.
Several years later, the Galaxy Note 9 reached 8.8mm.
The final Galaxy Note 20 Ultra became even slimmer at only 8.1mm.
These devices became the benchmark for large-screen flagship smartphones.
Why Thickness Was the Biggest Problem for Foldables
Early foldable phones introduced incredible flexibility but demanded significant engineering compromises.
Manufacturers had to fit:
Dual Displays
Unlike traditional smartphones, foldables include both an external display and a much larger internal folding screen, increasing internal complexity.
Larger Hinges
The folding hinge remains one of the most advanced mechanical components inside any smartphone. Earlier generations required larger hinge assemblies, resulting in much thicker devices.
Bigger Batteries
Powering two displays requires additional battery capacity, adding further bulk.
Structural Reinforcement
Foldable screens require reinforced frames and protective materials that traditional smartphones simply do not need.
Together, these engineering challenges made early foldables substantially thicker than conventional flagship devices.
Samsung’s Engineering Progress Is Finally Paying Off
Instead of attempting dramatic yearly reductions, Samsung steadily improved every generation.
The Galaxy Z Fold lineup gradually became thinner while simultaneously improving durability, display quality, battery life, hinge reliability, and overall user experience.
One of the largest improvements arrived with the Galaxy Z Fold 7.
Folded thickness dropped to just 8.9mm.
Unfolded thickness reached only 4.2mm.
That achievement represented one of the biggest design breakthroughs in Samsung’s foldable history.
Galaxy Z Fold 8 Continues the Trend
According to current expectations, Samsung will continue refining its foldable lineup rather than redesigning it completely.
The standard Galaxy Z Fold 8 is expected to measure approximately 9.7mm when folded.
While slightly thicker than the Fold 7, it still closely resembles the dimensions of Samsung’s original Galaxy Note.
The Galaxy Z Fold 8 Ultra is expected to retain the impressive 8.9mm folded profile while becoming even thinner when unfolded.
Reports suggest
Although these differences sound minor on paper, every tenth of a millimeter represents a major engineering accomplishment in modern smartphone manufacturing.
Comparing Seven Years of Progress
Samsung’s evolution becomes much more impressive when viewed over time.
Device Thickness Weight
Galaxy Note (2011) 9.65mm 178g
Galaxy Note 9 8.8mm 201g
Galaxy Note 20 Ultra 8.1mm 208g
Galaxy Fold (2019) 15.7–17.1mm 263g
Galaxy Z Fold 6 12.1mm 239g
Galaxy Z Fold 7 8.9mm folded / 4.2mm unfolded 215g
Galaxy Z Fold 8 (Expected) 9.7mm 201g
Galaxy Z Fold 8 Ultra (Expected) 8.9mm folded / 4.1mm unfolded 218g
This comparison highlights one of
The company reduced folded thickness by nearly half while simultaneously lowering weight and improving overall usability.
Foldables Are Becoming Everyday Smartphones
One of the strongest arguments against purchasing a foldable smartphone was always portability.
Users worried that carrying a foldable device would constantly remind them of its larger size.
That concern is rapidly disappearing.
Modern Galaxy Z Fold devices fit comfortably into pockets, jackets, backpacks, and everyday use scenarios with far fewer compromises than previous generations.
For many users, the experience now feels remarkably similar to carrying a premium Galaxy Note.
Technology Behind the Slimmer Design
Samsung’s improvements extend far beyond simply reducing thickness.
Engineering advancements include:
Improved Hinge Architecture
New hinge mechanisms occupy less internal space while increasing durability.
Stronger Materials
Titanium-inspired structural components allow thinner designs without sacrificing rigidity.
Better Internal Component Layout
Samsung continues optimizing motherboard placement, battery positioning, and cooling systems to maximize internal efficiency.
Advanced Flexible OLED Panels
Modern folding displays are thinner, stronger, brighter, and significantly more reliable than first-generation panels.
These innovations collectively contribute to
Foldables Still Face Challenges
Although thickness is no longer a major disadvantage, foldable smartphones still face several obstacles before replacing traditional flagship devices entirely.
Premium pricing remains the biggest barrier for many consumers.
Repair costs also remain higher due to specialized folding displays and hinge mechanisms.
Battery longevity, crease visibility, and software optimization continue improving but still differentiate foldables from standard smartphones.
Nevertheless, Samsung has successfully solved one of the industry’s most visible criticisms.
Deep Analysis
Engineering Maturity Rather Than Marketing
Samsung’s latest progress demonstrates genuine engineering refinement rather than cosmetic redesign. The improvements accumulated gradually over several generations instead of relying on one dramatic breakthrough.
Seven Years of Consistent Innovation
Few smartphone categories have evolved as dramatically as foldables. Comparing the first Galaxy Fold with today’s models illustrates how rapidly hardware engineering has advanced.
The Galaxy Note Comparison Matters
Comparing the Galaxy Z Fold lineup with the Galaxy Note series is particularly meaningful because Note devices were widely recognized for balancing productivity with portability. Achieving similar dimensions helps reduce psychological barriers for longtime Samsung users considering foldables.
Thickness Is No Longer the Deciding Factor
Consumers previously dismissed foldables primarily because they felt too bulky. That objection has largely disappeared, shifting purchasing decisions toward price, durability, software experience, and productivity features.
Flex Titanium Could Shape Future Designs
Samsung’s rumored Flex Titanium display technology suggests that future foldables may continue becoming lighter, thinner, and stronger without compromising structural integrity.
Competition Will Intensify
Chinese manufacturers have aggressively pursued ultra-thin foldable designs. Samsung’s continued refinement helps maintain its competitiveness in the premium foldable segment.
User Experience Benefits Most
Slimmer devices are not merely aesthetic improvements. Reduced thickness enhances portability, comfort, one-handed handling, pocketability, and overall everyday usability.
Incremental Improvements Deliver Major Results
While reducing thickness by only fractions of a millimeter may appear insignificant, achieving such refinements in devices containing flexible displays, hinges, dual batteries, and complex internal components requires exceptional engineering precision.
Samsung’s Long-Term Strategy Is Working
Instead of rushing revolutionary changes every year, Samsung has focused on gradual improvements that collectively transform the user experience. This long-term strategy appears increasingly successful.
The Foldable Market Is Entering a New Phase
Rather than being viewed as experimental devices, premium foldables are becoming practical flagship smartphones capable of replacing traditional slab phones for many consumers.
What Undercode Say:
Samsung Has Finally Solved One of
For years, thickness represented the largest compromise of foldable smartphones. Samsung’s latest engineering achievements show that the company has nearly eliminated this disadvantage.
Evolution Has Been More Important Than Revolution
Rather than relying on radical redesigns every year, Samsung steadily refined its hinge, display, chassis, and internal layout. This slow evolution ultimately produced a significant transformation.
Galaxy Note Users May Feel at Home
Many former Galaxy Note owners have hesitated to switch to foldables. Matching Note-like dimensions makes the transition much more appealing.
Engineering Efficiency Is the Real Story
Reducing thickness while maintaining battery capacity, durability, camera performance, and display quality reflects substantial improvements in internal engineering efficiency.
Pocketability Is Becoming a Selling Point
Early foldables felt noticeably bulky. Modern Galaxy Z Fold devices increasingly resemble premium flagship phones during everyday use.
The Hinge Remains
Samsung’s experience with hinge engineering continues to differentiate its products. Years of refinement have improved both durability and compactness.
Flex Titanium Could Influence Future Smartphones
If
Consumer Confidence Will Continue Growing
As practical drawbacks diminish, more consumers are likely to view foldables as viable replacements rather than expensive experiments.
Pricing Remains the Largest Challenge
Hardware improvements alone cannot guarantee mass adoption. Premium pricing continues to limit accessibility for many buyers worldwide.
Foldables Are Becoming Mainstream
The smartphone industry appears to be entering a phase where foldable devices are no longer niche products but genuine flagship alternatives capable of serving everyday users.
✅ Confirmed:
✅ Partially Confirmed: Specifications for the Galaxy Z Fold 8 series remain based on reports and expectations prior to Samsung’s official announcement, so final dimensions could change.
✅ Confirmed: The reduction in folded thickness from the original Galaxy Fold to the latest Galaxy Z Fold models demonstrates a substantial engineering improvement and reflects the broader trend in foldable smartphone development.
Prediction
(+1)
(-1) Even with remarkable engineering progress, premium pricing, expensive repairs, and increasing competition from Chinese smartphone manufacturers could slow Samsung’s market dominance if rivals deliver similarly thin devices at significantly lower prices.
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