Yesterday, we saw the Samsung Galaxy S25 Slim for the first time, and the renders revealed its impressive 6.4mm slimness. But without context, this number remains abstract. Sure, the iPhone 17 Air will be even thinner, but what about the other members of the Galaxy S25 family? Luckily, renowned leaker @onleaks has posted an image comparing the thickness of all four members of the Galaxy S25 series.
The Slimness of the Galaxy S25 Slim Compared to the Other Models
In this image comparing dimensions, we can see that the Galaxy S25 Slim is essentially a thinner version of the Galaxy S25+. Their length appears identical, but what distinguishes the Slim is its thinness. With a thickness of just 6.4mm, the S25 Slim is the thinnest model in the Galaxy S25 range. However, the question arises: when you add a case, will this thinness still be noticeable?
Those looking to have “the thinnest Galaxy S25” might be drawn to this model but will also need to consider potential trade-offs. For example, a reduced thickness may impact the phone’s performance and battery life. These elements might not be as impressive as those of the thicker models in the series.

The Entire Galaxy S25 Series
In addition to the S25 Slim, Samsung will launch other models in the Galaxy S25 range, including the Galaxy S25, S25+, and S25 Ultra. Each of these models features distinct characteristics, and thickness is one of the most notable criteria. The Galaxy S25 Ultra, for instance, is thicker than the S25 Slim. But this difference likely allows for the inclusion of additional features, such as a larger battery and enhanced camera capabilities.
The S25 Slim, while thinner, may focus on trade-offs in energy management and performance. In contrast, the other thicker models will likely offer advantages in terms of power and battery life.
Feeling the Difference in Hand
Apart from comparing thickness, users will likely want to compare how each phone feels in hand. While an image can provide information about dimensions, nothing can replace the physical experience of holding the phone. How does the Galaxy S25 Slim feel compared to the other thicker models, like the S25 Ultra or S25+? Unfortunately, we won’t be able to answer this question until the devices are available in May 2025. In the meantime, @onleaks’ renders offer a helpful visual preview. But there’s still much to discover about the real-world feel.
The launch of the Galaxy S25 Slim is scheduled for May 2025. It’s likely Samsung will reveal it earlier at the Unpacked event on January 22. However, its actual release could be delayed. In the meantime, this thickness comparison helps us better understand what each model in the Galaxy S25 series has to offer.