Samsung Galaxy Z Fold4 and Galaxy Z Flip4 make their market debut today
, but even though they are the company’s fourth-generation foldable phones, many people still have doubts about their durability. To further facilitate those on the outside, Samsung shared a video showing some of the tests they went through before they were deemed eligible for release.
The short 100-second clip reveals all the rigorous testing the folds go through, including pressing multiple buttons, folding and unfolding, and testing their water resistance. Watch the amazing video:
Reliability is key to Samsung, the company revealed in a press release, and it does all the testing to ensure the phones “can withstand everyday wear and tear” and meet user needs. All processes are automated, which is hardly a surprise, but the engineering behind the development of these plants is a marvel to look at.
The back panel of the phone is applied by one set of machines and then pressed firmly by another. Then the device undergoes functional tests to make sure the screen works with the S Pen, the Samsung Pay service is in place, the touch and proximity sensors as well as the wireless coil have to go through the process as well.

We can also see the water resistance test that has multiple valves, spraying water on the fold from all angles. All in all these two have come a long way since the first Galaxy Fold often developed screen issues after a week of use.
Our Samsung Galaxy Z Flip4 review has been out for a couple of days and you can also read the review on the Galaxy Z Fold4 that just came out of print.

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