Does innovation turn into hidden dangers? User discovers the cause of Samsung Galaxy Z Fold 4 hinge failure

According to news on March 19, Samsung’s foldable phone may be the best in the industry, but it is not perfect. Some unlucky Galaxy Z Fold 4 owners are experiencing this first-hand, with their foldable phones experiencing issues that prevent them from fully unfolding, and some users took to Reddit forums to share their experiences of being forced to try to fix the problem on their own.

It needs to be emphasized that if your Galaxy Z Fold 4 is suspected of having a hinge failure, the safest thing to do is to send it to an authorized Samsung repair shop for warranty repair (if it is still under warranty ) rather than repairing it yourself based on network information provided by other users. The mechanical structure of these foldable devices is very complex and can be easily damaged if not handled properly. However, the road to warranty may not be smooth. A Reddit user said that the warranty of his Galaxy Z Fold 4 was rejected, and he had no choice but to take apart the phone to repair it. Fortunately, he managed to fix the phone, but he also seems to have stumbled upon why many Galaxy Z Fold series devices, including the Z Fold 4 and older models, may suffer from the same hinge issue - The phone cannot be fully unfolded and laid flat. It is understood that when developing Galaxy Z Fold 2, Samsung came up with an ingenious idea to add tiny bristles to the hinge to prevent foreign objects from entering the inside of the phone. At the time, Samsung said the idea originated with its vacuum cleaners. Since then, every Galaxy Z Fold and Z Flip series phone released by Samsung has adopted this hinge design called "sweeper technology". Sadly, this innovation seems to have backfired. Many users claim that the bristles used to remove foreign objects and the glue that holds them in place can deteriorate over time and prevent the hinge from opening and closing. In other words, although "sweeper technology" can prevent foreign objects from entering, the "broom" itself will also introduce new problems. Fortunately, the latest Galaxy Z Fold 5 does not seem to have this problem. It's unknown whether Samsung has solved its "sweeper technology" issues, but the Galaxy Z Fold 4 may be the last model in the Fold series to suffer from hinge flaws.

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