As rumored, Samsung waited until the end of the presentation to announce one last product. The “One More Thing” of Unpacked 2025 is nothing other than the Galaxy S25 Edge, a mysterious ultra-thin mobile about which not much is known. Samsung showed a small teaser with components that are assembled to form a terminal what could be the Galaxy S25 Slim.
The video leaves a lot to the imagination, although there are two characteristics that catch our attention and make us think that This is the rumored Galaxy S25 Slim. To begin with, Samsung has chosen to present it “in pieces”, which would resolve doubts about the interior of the mobile. Another important detail appears at the end, when the animation focuses on the side of the terminal that It is extremely thin.
Samsung has not offered more information, further fueling speculation about its new mobile. If we stick to previous leaks, The Galaxy S25 Edge could be officially announced at the beginning of summer. The manufacturer wants to give a considerable amount of time to the Galaxy S25 family before showing a new model.
The Galaxy S25 Edge would be Samsung’s next bet to dominate the high-end. The first rumors suggest that this mobile It will be located between the Galaxy S25+ and the Galaxy S25 Ultra. Being an intermediate model, we could expect features shared with its older brother, such as better cameras or screen.
A detail to highlight has to do with autonomy. Reducing the thickness of a mobile phone involves making sacrifices in its design, at least if we use traditional components. I would be impossible to offer a 4,500 or 5,000 mAh battery in such a thin bodyunless Samsung uses new technology.
The Galaxy S25 Edge would debut with a silicon-carbon battery
One of the most important features in a mobile phone is the autonomy. Lithium-ion batteries have reached their limit and offering more hours requires more space within the chassis to increase its size. This is not necessary with silicon-carbon batteries, a technology that Samsung omitted in its Galaxy S25but which are already used by Xiaomi, Honor and other manufacturers.
The Silicon-carbon batteries are an evolution of lithium-ion batteriesdesigned to improve their performance, capacity and useful life. Its main innovation lies in the anode, which replaces conventional graphite with a combination of silicon and carbon.
Silicon has a much greater theoretical capacity to store lithium ions, which increases the autonomy of the devices. However, its tendency to expand during charging cycles can cause structural degradation and limit battery life. To mitigate this problem, advanced compounds that integrate carbon are used, which stabilizes silicon and improves electrical conductivity.
This design too allows for faster charging ratesmaking them ideal for high demand applications. Additionally, these batteries have an improved safety profile by reducing the formation of dendrites, structures that can compromise the integrity of traditional batteries.
Some mobile phones that use silicon-carbon batteries are the Xiaomi 15 and Honor Magic7 Litewhich increased their autonomy without increasing the thickness of the chassis. Samsung could follow this path and integrate technology into the Galaxy S25 Edge.