Power off the iPhone
Remove the charging cable and any accessories
Inspect the charging port with a bright light
Use a soft, dry, anti-static brush to loosen debris
Gently tap the iPhone with the port facing down
Use a wooden or plastic toothpick to carefully remove lint
Avoid metal tools, liquids, and compressed air
Repeat gently until the port is clear
Let the port dry completely if any moisture is present
Test charging with a known-good cable and charger
Seek professional repair if the port still does not work