Samsung’s next Galaxy S26 Edge is already turning heads—even before its expected 2026 launch. Recent leaks offer a glimpse into the phone’s ultra-slim design and surprisingly larger battery, hinting at major advancements in smartphone engineering.
How Thin Could the Galaxy S26 Edge Be?
A trusted leaker, Ice Universe, claims the Galaxy S26 Edge will measure just 5.5 mm thick—making it 0.3 mm thinner than the Galaxy S25 Edge’s already impressive 5.8 mm profile. If accurate, this would place the phone on par with—or even slimmer than—the rumored iPhone 17 Air.
That level of thinness in a modern flagship is remarkable—and suggests Samsung is pushing the boundaries of smartphone design.
🔋 Bigger Battery Without Added Bulk
Despite becoming slimmer, the leak also suggests the Galaxy S26 Edge will include a larger battery, likely around 4,200 mAh—up from the 3,900 mAh cell in the S25 Edge.(Android Authority)
This upgrade appears possible thanks to advanced battery tech like silicon‑carbon, which offers higher energy density and faster charging without increasing thickness.(Android Central)
🔄 Replacing the Plus with Edge
Leaks point toward a restructuring of the Galaxy S lineup: Galaxy S26 Edge may entirely replace the upcoming Plus model, making Edge the mid-size flagship between the standard S26 and the S26 Ultra.(Tom’s Guide)
Based on existing lineup trends, expected screen dimensions are approximately:
- 6.27-inch – base S26
- 6.66-inch – S26 Edge
- 6.89-inch – S26 Ultra
🔍 What This Means for Users
Design Upgrade
The new Edge model combines sleekness and premium feel without compromising ergonomics. At just around 5.5 mm, it could become Samsung’s slimmest flagship ever.
Battery Longevity
With a 4,200 mAh battery, the Galaxy S26 Edge should offer noticeably better battery life than its predecessor—despite its slimmer profile.
Cutting‑Edge Materials
Adopting silicon‑carbon battery tech could enable faster charging, improved durability, and reduced heat—all while keeping the phone lightweight and slim.
Software and Ecosystem
The Galaxy S26 Edge is expected to launch with Android 16 and One UI 8.5, aligning it with Samsung’s next-gen software across the premium lineup.
📦 Quick Comparison: S25 Edge vs. S26 Edge
| Feature | Galaxy S25 Edge | Galaxy S26 Edge (Leaked) |
|---|---|---|
| Thickness | 5.8 mm | ~5.5 mm |
| Weight | ~163 g | Expected to be even lighter |
| Battery Capacity | 3,900 mAh | ~4,200 mAh |
| Battery Tech | Standard Lithium-ion | Likely Silicon-Carbon or SUS CAN |
| Display Size | 6.7″ Curved AMOLED | ~6.66″ with minimal bezels |
| Placement in Series | S25 mid-tier variant | Replacing the Plus in S26 lineup |
✅ Final Thoughts
With indications that the Galaxy S26 Edge will be slimmer than ever while packing a bigger battery, Samsung seems poised to solve the biggest criticism of the S25 Edge—its limited battery life.
If verified, the new Edge phones could strike the elusive balance between elegant thinness and real-world usability, making them one of the most exciting launches in Samsung’s premium portfolio.
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