Samsung's Galaxy Z Fold 8 Unveiled: Thinner Design, Bigger Battery Thanks to Flex Titanium

Samsung Electronics has launched its latest foldable smartphone lineup, the Galaxy Z 8 series, at the Galaxy Unpacked 2026 event in London. The new devices aim to set a new standard for foldable technology, emphasizing a thinner, lighter form factor without compromising battery performance.

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We have incorporated all the insights and innovations from the past seven generations to complete the most evolved foldable lineup ever.

At the heart of this innovation is "Flex Titanium," a new material technology that makes the display thinner, more flexible, and sturdier. This is achieved through an advanced etching process applied to titanium components, including a "titanium plate" and a "titanium film." Unlike previous designs that used a linear pattern of holes, the new series features an "inverted triangle" shape in the titanium plate, allowing the display to flex more smoothly at the center. Samsung claims this design enhances durability against impacts and repeated folding.

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Through this Flex Titanium technology, the display module has become more than 10% thinner compared to before.

The result of these advancements is a significantly thinner display module, with the Galaxy Z Fold 8 Ultra achieving a record-breaking 4.1mm thickness when unfolded, making it the thinnest foldable phone globally. The Galaxy Z Flip 8 also achieves a new benchmark at 6.1mm. Despite the reduced thickness, Samsung has managed to increase battery capacity. The Galaxy Z Fold 8 Ultra features a 5000mAh battery, a 14% improvement over its predecessor, thanks to the adoption of next-generation "silicon-carbon" anode material. This material offers higher energy density, and Samsung has redesigned the entire battery system to ensure stability and performance.

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The high energy density is stably implemented by redesigning the entire battery system, including the anode, electrolyte, and separator.