Samsung has the chance to enhance the manufacturing of its smartphones with each new generation, particularly in terms of the hinge that supports the flexible display or the tightness of its products. Samsung now guarantees that its folding smartphones, including the Galaxy Z Fold 4 and Galaxy Z Flip 4, can resist at least 200,000 openings and closings without harm. To back up its promises and reassure prospective customers, Samsung has recently posted a brief, under two-minute YouTube video that shows us how its newest folding smartphones are made and, in particular, the testing techniques the company came up with to ensure the durability of its goods. The process is automated, and many controls are applied to the phones as they leave the manufacturing lines. We may see, for instance, a test of the touch screen or wireless charging as well as a test of the different volume or ignition buttons.  Before products are packaged and transported to different places of sale across the globe, these techniques are often used in the industry to find faulty products. The video also demonstrates the equipment repeatedly folding and unfolding cellphones to assess their durability and spot even the smallest design flaws. A final water resistance test is conducted on fully available smartphones with water jets projected onto the screen and the active devices fully submerged in water. The most current Samsung Galaxy Z Fold 4 and Galaxy Z Flip 4 are already available here in Kenya and the whole world