You can actually see the back of the port if you look with a light. My wife and I had the same issue and the pointed wooden toothpick fixed both and a bunch of lint came out. But 2 days later, out of my wife’s came even more lint. Other people have reported this happening as well. As a side note, the lint is coming from your pocket…..my wife and I both keep our phones in our pocket…we know another person who keeps their phone in their purse and their charging port was lint free.