They do. I started seeing my phone not getting fully charged during the night and driving on a bumpy road would make the screen turn on and off. Took me a while

They do. I started seeing my phone not getting fully charged during the night and driving on a bumpy road would make the screen turn on and off. Took me a while to realize that a small lint ball from inside my pocket had made it into the USB C socket of my phone. It was small enough not to be overly evident. Few minutes with a toothpick and it's good as new!