How to clean a phone charging port
You need to take a little bit of cotton from a cotton pad and wrap it around the end of a toothpick after turning off your phone.
pressurised air from either the left or right side into the charging port. Any loose dust should be removed as a result.
Using cleaning alcohol, dampen a cotton swab.
In the charging port of your phone, insert the moist or dry tip of your cotton swab and wriggle it left to right.
Remove the cotton swab after thoroughly searching it, and then blow a bit more air into the charging port.