Chosen Solution
My brother’s charger has a small black burn mark on the end of the charger that plugs into your phone, it still works but there’s the mark and I’m not sure what it’s from and if it’ll damage the phone when it’s plugged in. I’m not looking for a fix, but I’d like to know if it’ll damage the iPhone being plugged in. I can provide photos of it later if need be.
The black mark is from arcing between the charge port and the connector. If your charge port has debris in it and needs cleaned out the charger connector doesn’t go into the port as it should and arcing can begin. The charge cable should be ok but I’d check for dirt inside the port. Put the charger into the port, if the plastic part of the charger connector touches the bottom of the phone or very nearly touches then the port is ok. If there’s a gap of a mm or more then it probably needs cleaned out. I get customers all the time at work with iPhones that need the port cleaned. Common problem with iPhones.
There’s a potential that it will. “Potential” It could be ok, but any time there’s a burn mark on any sort of adapter, charger, plug-in, you’re only asking for trouble in the long run. If it’s as easy to replace as that is, replace it.
