As AI takes center stage, you might think smartphone hardware has stalled—but manufacturers are branching out beyond AI to bring fresh features. While some rivals focus on larger batteries or ever-smaller footprints, Samsung has chosen a different path. In a bid to outpace Apple, it’s unveiled its thinnest handset to date: the Galaxy S25 Edge. Below, you’ll find its full specs, how it compares to today’s slim devices, and the compromises you’ll face if you decide to pick one up.
Introducing the Galaxy S25 Edge: The Opening Salvo in the Slim-Phone Era
At just 5.84 mm thin and weighing 163 g, the S25 Edge stakes its claim as the world’s slimmest phone. It combines Gorilla Glass Ceramic 2 up front, a titanium frame, and Gorilla Glass Victus 2 on the back, all within an IP68-rated shell. The screen is a 6.7″ QHD+ 2X AMOLED panel with a 120 Hz refresh rate and up to 2,600 nits peak brightness. Under the hood sits Qualcomm’s Snapdragon 8 Elite (the full 8-core model), paired with 12 GB of LPDDR5X RAM and UFS 4.0 storage. A 3,900 mAh battery handles power, supporting 25 W wired charging (wireless charging is included, though Samsung hasn’t specified its wattage).
Photography duties are covered by a 200 MP f/1.7 main sensor (1/1.56″), a 12 MP f/2.2 ultrawide, and a 12 MP f/2.2 front camera. Connectivity options include a USB 3.2 Gen 1 Type-C port with DeX display-out support, Wi-Fi 7, Bluetooth 5.4, UWB, and an ultrasonic under-display fingerprint reader.
Why the Galaxy S25 Edge Matters
Measuring a mere 5.84 mm, the S25 Edge redefines how slim a flagship phone can be. While compact models target portability, the ultra-thin niche still has keen fans—and Samsung’s latest fits that bill perfectly. Thanks to Silicon Carbon batteries, modern Android handsets often hover around 8–8.5 mm thickness, but shaving off 2 mm dramatically alters the feel in hand—comparable to the difference between a 6.7″ and a 6.3″ display. That’s why even slim-but-not-super-slim rivals like the iQOO 13 (8.13 mm) and OnePlus 13T (8.2 mm) still feel noticeably chunkier. And while OPPO’s Find N5 foldable is just 4.21 mm when unfolded, its form factor sets it apart. Rumors hint that Samsung’s next Z Fold 7 could reach 3.9 mm unfolded, suggesting 2025 may indeed be the “year of slim” for high-end devices.
Until Apple’s rumored 5.5 mm iPhone 17 Air arrives, the S25 Edge stands as the slenderest slab you can buy. For those who prize a premium, featherweight feel or slip their phone into tight pockets, it could be the ideal pick—and it may spur other brands to chase ever-thinner designs.
The Trade-Offs of Extreme Thinness
Of course, fitting everything into just under 6 mm comes with drawbacks. A 3,900 mAh cell won’t win battery-life awards, making screen-on time the phone’s most likely weak spot. Perhaps Samsung pushed to beat Apple out the door instead of waiting for next-gen Silicon Carbon packs that bigger rivals, like Tecno’s 5.75 mm-thin Spark concept with its 5,200 mAh battery, already hint at. The slim chassis also leaves no room for a dedicated telephoto lens and raises questions about long-term structural strength.
Although it forgoes the largest battery and most versatile zoom, the Galaxy S25 Edge’s ultra-thin profile makes it a standout among slab-style flagships. It may not suit everyone—but for those hungry for the slimmest flagship experience, it’s poised to kick off a new trend in 2025.
