No. You should not clean the iPhone charging port with a SIM ejector pin. The metal has the capacity of scratching or damaging the internal pins. To Clean iPhone Charging Port, use a wooden toothpick or a soft brush. These are light and have fewer chances of damaging the interior of the port. The port should not be tampered with, as it may cost you a lot of money to repair it. Therefore, opt to use safer tools in cleaning your iPhone.