Yes, both issues could be caused by a damaged port: if one of the data pins in you're connector is compromised, then your phone would exhibit similar behaviors.
The only thing that seems weird is that the phone fast-charges with the Samsung charger.
With that said, as I recall, the phone looks for a specific voltage on one of the data pins which tells it that it is attached to a high-current power supply, so if that data pin is good but the other isn't, then it may recognize the Samsung charger but not the third-party ones which may be using an alternate methods of telling the phone that it is a high-current charger (This is purely speculation on my part).
If you have a magnifying device of some sort and a bright light source, I'd recommend talking a close look at your micro-USB port and make sure there isn't any dirt/debris/contamination in there that would prevent your cables from making a good connection with all five pins.
I generally have to blow out a little lint about once a year or so, even though I use cases with port-covers.
01-22-2017 09:05 AM