This topic, Samsung reveals the secrets of making Galaxy Z Fold8 and Z Fold8 Ultra thinner and lighter than ever, appeared on TechRadar.

Samsung clarified its doubts about how it made the Galaxy Z Fold8 and Z Fold8 Ultra thinner and lighter. The original Galaxy Fold weighed 276 grams, while the Galaxy Z Fold2 recorded a higher figure of 282 grams.

The latest generation, Galaxy Z Fold8, is much lighter at just 201 grams, despite its different size from previous generations.

Samsung made an important step with the Galaxy Z Fold7 when it wondered if it was possible to make a foldable phone lighter than conventional flagship phones. It succeeded in doing so, as the weight of the Z Fold7 is around 215 grams, which is 3 grams less than the Galaxy S25 Ultra.

The Galaxy Z Fold8 Ultra maintained the same weight of 215 grams, but reaching this figure required rethinking hundreds of components inside the phone. Although the battery capacity increased from 4,400 to 5,000 mAh, the new battery weighed 6 grams more than the previous generation.

To compensate for this increase, Samsung reviewed 270 components and 180 types of auxiliary parts, and managed to do without 15 types of them. In addition to reducing the thickness and weight of many other components. Although some reductions did not exceed 0.0001 grams, combining these differences across different parts of the phone helped achieve the target weight.

Samsung’s weight-loss efforts didn't stop at the battery. It increased the area of the graphite sheets by 7% to improve cooling performance compared to the Z Fold7, and it added the first ultra-wide camera with a 50-megapixel resolution in the history of the Fold series.

Therefore, it had to make further reductions in the weight of other components to maintain the phone’s overall weight.

In parallel, Samsung has continued to significantly reduce the thickness of Galaxy Z Fold phones since the launch of the first generation. To achieve this, the company redesigned the internal structure of the phone, including the main board, to make more efficient use of available space. It also developed new materials because rearranging components alone was not enough to reach the required thickness.

In this generation, Samsung introduced Flex Titanium design, which includes a titanium layer to support the foldable screen. The thickness of this layer is less than 20 micrometers, about one-third the width of a human hair.

The company also added a titanium sheet with a thickness of just 0.2 millimeters. Handling materials with such a thin thickness posed significant challenges during manufacturing, as processing operations could cause them to bend or distort. Therefore, Samsung engineers rearranged the manufacturing stages to ensure that they obtained precise and reliable components.

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