If your phone won't charge, do not rule out the possibility of the charging port being broken immediately. If your iphone charging port not working problem occurs suddenly, first try another cable and charger, reboot your iphone and check if there is lint or debris on the port. Software glitches may also impact charging. If these steps do not resolve the issue, there may be an issue with the charging port or the internal hardware, which may need to be inspected by a qualified repair expert.