iPhone 11 - I rec'd a warning about moisture in my charging port.

"When you connect a Lightning cable or an accessory to your iPhone XS, iPhone XS Max, iPhone XR, or later, your iPhone can warn you if there's liquid in the Lightning port."

If you see a liquid-detection alert on your iPhone, read this support article for what to do --> If you see a liquid-detection alert on your iPhone - Apple Support

A liquid detection alert can also appear if the port is clogged with dust or tiny debris. Use a toothpick to very carefully clear out the port.