Here’s how Samsung assembles and tests the Galaxy Z TriFold | Infinium-tech
The Galaxy Z Trifold is Samsung’s top-dog foldable, and it stands out as a remarkable engineering achievement for the brand. We’ve already covered some of the details in our announcement coverage, but Samsung has shared an official video detailing the assembly and rigorous testing process that ensures each Z Trifold will perform reliably in daily use.
Samsung claims it’s taking advantage of a decade of foldable smartphone innovation, and it all starts with the titanium hinge assembly, which includes two Armor FlexHinges. Samsung uses an automated assembly system and also incorporates 3D laser scanning for quality control of the main display.

Samsung is also implementing a 200,000-cycle folding test to ensure that the main display can withstand 100 folding tests per day for five years.

The Z Trifold also undergoes a high-speed CT test, which analyzes key internal structure components such as flexible printed circuit boards to ensure all requirements are met. From there, the foldable goes through a camera sharpness test, which ensures that its cameras are completely ready for use.

Samsung is also doing what it calls “real-world scenario testing” that simulates active use cases in a wide range of conditions, including network, battery, display, and environmental factors.

Last but not least, Samsung makes sure to test the IPX8 water resistance of the Z Trifold by spraying jets of water on the device from different angles.

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