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| Following the scrapped LG Rollable, Samsung is reportedly set to try its hand at a rollable smartphone. |
Samsung could be preparing a new approach to smartphone design with a rollable display that expands vertically instead of unfolding like a conventional foldable phone. According to information shared by prominent technology tipster Ice Universe, the South Korean company is reportedly developing a handset capable of switching between 16:9 and 21:9 display aspect ratios. The proposed design would give users a relatively compact smartphone for everyday tasks while allowing the screen to extend into a taller format when additional viewing space is needed. Although Samsung has not officially confirmed the device, the latest leak offers an interesting glimpse at how the company's next generation of flexible-screen smartphones might evolve.
Samsung Rollable Phone Could Expand From 16:9 to 21:9
The latest information comes from Ice Universe's post on X, which describes a Samsung smartphone with a display that extends from a compact 16:9 aspect ratio to a taller 21:9 configuration. Unlike traditional foldable devices that open along a hinge, the rumored handset would use a sliding or rolling display mechanism to reveal additional screen space. This approach could allow Samsung to create a device that is easier to carry when retracted while offering a more elongated viewing area when expanded. The concept illustrations accompanying the leak suggest a vertically extending design, although they should not be treated as confirmed images of a finished product.
Why Two Display Aspect Ratios Could Be Useful
The ability to change screen proportions could offer practical advantages beyond the novelty of an expandable display. In its 16:9 configuration, the handset would provide a shorter, wider screen that may be more convenient for certain applications and landscape-oriented video content. Extending the screen to 21:9 would create additional vertical space in portrait orientation, potentially making it easier to read lengthy articles, browse websites, follow conversations, or work with documents without scrolling as frequently. The elongated format could also be useful for watching certain widescreen movies in landscape orientation, although the actual viewing experience would depend on the final display dimensions, resolution, and software optimization.
Another potential advantage is flexibility. Rather than requiring users to choose between a compact smartphone and a permanently taller device, an expandable display could adapt to different activities throughout the day. Reports suggest that partial extension may also be possible, potentially allowing the screen to stop between its smallest and largest configurations. However, Samsung has not demonstrated this functionality in a confirmed commercial handset, and details about how the screen would extend remain unclear. A motorized system controlled by a button is one possibility, but the company has not confirmed the final operating mechanism or whether it would support manual adjustment.
Battery Capacity Could Be Samsung's Biggest Engineering Challenge
While an expandable display offers obvious design possibilities, fitting the required technology into a practical smartphone presents considerable engineering challenges. Ice Universe specifically highlighted battery capacity as a major concern, explaining that the sliding mechanism could occupy a substantial amount of space inside the chassis. Components required to guide, support, and potentially motorize the flexible display would compete for room with the battery, cameras, cooling hardware, and other internal components. This makes the balance between device thickness, battery size, and mechanical reliability particularly important. Samsung would need to provide competitive everyday battery life without making the handset excessively thick or heavy.
An Expanded Screen Adds More Design Considerations
Power consumption is another factor worth considering. When fully extended, the smartphone would have a larger active display area, which could increase energy requirements depending on brightness, displayed content, and panel efficiency. The mechanical system itself may also require additional power if Samsung chooses a motorized design. Beyond battery performance, engineers would need to address long-term durability, protection against dust and debris, and the repeated mechanical stress associated with extending and retracting a flexible OLED panel. None of these challenges necessarily makes the concept impractical, but they help explain why developing a reliable rollable smartphone involves more than simply installing an expandable screen.
How Samsung's Rollable Concept Compares With Foldable Phones
Samsung's rumored design would approach expandable smartphone screens differently from existing book-style foldables. Devices such as the Motorola Razr Fold on Amazon use a hinged structure that opens to reveal a larger internal display, creating a tablet-like workspace. A vertically rollable smartphone, by comparison, would maintain a more conventional single-screen layout while changing its physical height. That could make the experience feel more seamless when moving between compact and expanded modes, although it would not necessarily provide as much usable screen area as a large book-style foldable. Each design involves different compromises in portability, multitasking, durability, and internal hardware packaging.
Samsung Has Already Demonstrated Expandable OLED Technology
The idea of a vertically extending smartphone display is not entirely new for Samsung. Its display manufacturing division has previously demonstrated several flexible OLED technologies, including foldable, slidable, and rollable panels. In its official CES 2025 technology announcement, Samsung Display described a Slidable Flex Vertical concept capable of expanding from 5.1 inches to 6.7 inches. That prototype demonstrates the company's experience with vertically expandable screens, but it should not be confused with the newly rumored smartphone. The reported 16:9-to-21:9 device has no confirmed display size, and Samsung has not established a direct connection between the earlier prototype and a future commercial Galaxy product.
The wider history of rollable smartphones also highlights the difficulty of bringing experimental display technology to consumers. LG previously developed its own rollable smartphone concept, but the device never reached commercial release after the company withdrew from the smartphone business in 2021. Other manufacturers have demonstrated expandable-screen prototypes without establishing rollable phones as a mainstream product category. Samsung's experience manufacturing flexible OLED panels and selling foldable smartphones could provide useful expertise, but a commercially successful rollable device would still need to prove that its mechanical complexity delivers meaningful advantages over established smartphone designs.
Samsung Rollable Phone Release Date: What Is Known?
Samsung has not announced an official release date, product name, or pricing information for the rumored vertically expandable handset. Earlier industry reports have suggested that a commercial Samsung rollable smartphone could arrive in the first half of 2028, although it remains uncertain whether those reports refer to the same device described in the latest leak. Names such as Galaxy Z Roll and Galaxy Z Slide have also circulated, but neither has been confirmed as the branding for this particular product. Likewise, key specifications including display resolution, processor, camera configuration, battery capacity, charging capabilities, and overall dimensions remain unknown.
For now, the most significant detail is the reported shift toward a smartphone that changes its proportions rather than simply unfolding into a larger screen. If Samsung can deliver a reliable sliding mechanism, adequate battery life, and software that intelligently adjusts to different display sizes, such a device could offer a distinctive alternative to conventional foldables. However, the project appears to remain at an early stage, and there is no guarantee that the concept will reach mass production in its currently rumored form. Further information from Samsung or more substantial hardware evidence will be needed before its commercial prospects can be assessed with confidence.
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| This concept image shows how much larger Samsung's rollable could become at the touch of a button. |