Behind Slim: How Samsung Engineered the Galaxy S25 Edge to Break Boundaries

Understanding users’ evolving needs is key to developing technology that truly matters. The new Galaxy S25 Edge combines flagship-level performance with a portable design, serving as a powerful pocket-sized AI companion that pushes the boundaries of what a mobile device can be.

The Galaxy S25 Edge is more than just a slim smartphone. Every curve, contour and component reflects a breakthrough in precision engineering, delivering a premium experience befitting the S series’ legacy.

Extensive experimentation was required to strike this balance, with numerous prototypes developed to test new combinations of components and structures — challenging established standards in mobile hardware design. The result is a no-compromise smartphone, meticulously engineered for design, performance and camera excellence.


Ultrathin Yet Built to Last
The Galaxy S25 Edge continues the design language of the S series while achieving the slimmest profile in Galaxy S series history — measuring just 5.8 mm thick and weighing only 163 g.

To make this possible, the idea of a smartphone was reimagined from the ground up. The Galaxy S25 Edge’s internal structure features a new mounting system, allowing components to be placed with precision down to 0.1 mm.

But the new device isn’t just slim — it’s tough as well. Premium materials, including a titanium frame as seen in the Galaxy S25 Ultra, make up the Galaxy S25 Edge’s robust exterior. It’s further reinforced by Corning^® Gorilla^® Glass Ceramic 2, a new display cover material strengthened with Samsung’s processing techniques.

It’s a careful balance of design and durability — all without compromise.

Cool Under Pressure
The Galaxy S25 Edge may be the slimmest S series device yet, but there’s nothing light about its performance. From everyday responsiveness to intense multitasking, Samsung’s latest smartphone delivers the same power and speed found across the Galaxy S25 series.

At its heart is the Snapdragon^® 8 Elite Mobile Platform for Galaxy¹ — a powerful processor customized by Qualcomm Technologies, Inc. to set new standards for on-device AI processing and daily performance. True performance, however, goes beyond the chipset, especially in a device so thin.

A custom thermal system — featuring a reconfigured vapor chamber 10% larger than the one used in the Galaxy S25+ — was developed to suit the Galaxy S25 Edge’s slim profile. To maintain thinness while efficiently managing heat, Samsung introduced a new “hole structure” — a first for Galaxy smartphones — in which a portion of the front metal frame was removed to allow more direct heat transfer from the application processor to the vapor chamber.

In addition, a precisely tailored thermal interface material helps absorb and disperse heat from surrounding components. The outcome? A phone that stays fast, cool and responsive — no matter the task.

The Galaxy S25 Edge shows that power doesn’t need more space — just smarter engineering.


Ultra-level Camera
A hallmark of the Galaxy S25 Ultra is the premium camera experience, and the Galaxy S25 Edge brings that level of performance to a sleek new form. Its dual camera system with wide and ultra-wide lenses includes a 200 MP main sensor that captures Galaxy S25 Ultra-level shots with extraordinary clarity, vibrant color and true-to-life detail, even in challenging lighting conditions.

The thickness of the main camera was reduced by more than 10% through structural optimization of the autofocus and optical image stabilization. A two-layer camera housing design offsets the module’s height, allowing the 200 MP sensor to sit naturally within the frame without disrupting the phone’s silhouette. The result is a Galaxy camera experience fit for pros, now in a slimmer, more compact form.


The Galaxy S25 Edge embodies Samsung’s dedication to overcoming long-standing limitations in mobile engineering. By uniting flagship performance, intelligent experiences and a pro-grade camera system in a slimmer, more refined form, the device unlocks what’s possible when every detail is designed with intention. More than a design milestone, the Galaxy S25 Edge marks the next chapter in mobile innovation — where design and engineering move forward, together.