My mobile lives primarily in my pocket. The last couple of weeks (months?) I've noticed that the USB-C port wasn't grabbing the cable when I plugged it into the car. Not a problem, as it's my wife's car and I charge wirelessly almost 100% of the time.
Took a toothpick to the port today, and can you say EWWWWW
The picture is about a third of what I pulled out of the port.
I'm happy to report that on testing, the phone grabbed the cable and held it much better now that I've removed all the lint from the port.