The Galaxy Z Flip's hinge fibers aren't enough to keep dust out
 

Samsung made much ado over fiber layers in the Galaxy Z Flip's hinge that are supposed to keep dust and debris from ruining your day, but how effective are they, really? They might not be as effective as you'd like. iFixit has tested the hinge's du...

https://www.engadget.com/2020/02/18/...inge-teardown/