Turn off the phone
Unplug the charger and remove any case
Inspect the charging port with a flashlight
Use a dry, soft brush to loosen dust and lint
Gently tap the phone with the port facing down
Use a wooden or plastic toothpick to lift out debris carefully
Use short bursts of compressed air if available
Avoid using metal tools
Avoid liquids, cotton swabs, or anything wet
Recheck the port for remaining debris
Test charging with the original cable
If the port still fails, seek professional repair