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.
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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.