My wife and i both have the S10. We both have the same issue that showed up at about the same time. Both phones will charge on a wireless charger and also with the wall block. But neither phone will charge on a mobile charger plugged into the lighter ports. I know i will get lots of check your port, check your cord, you power port is bad in the car, try another cord etc. So here is the kicker, her car is a Subaru outback, mine is a Ford F150. Same problem in both vehicles on 2 different power cords and when i swap cords . I thought it was a power cord issue at first but i purchased new cords, same brand from Verizon, and still the same issue. Have tried doing the forced restart and it will charge in slow charge until i enter my passcode and let the phone completely start. I have turned off wifi, bluetooth, mobile data and still same issue.
cigarette lighter. The charging cord is the cigarette lighter connector with the coiled cord usb-c. I now have 4, two are 3 years old, two are less than a week old. Does not charge on any of the 4 if they are plugged into any cigarette lighter port in both vehicles. There are 4 locations in the Subaru and 3 in the Ford. I also have a cigarette lighter wall plug that i can plug into the house, plug the cigarette lighter charging cord into it and still will not charge. But if i use any charging block, Samsung or Anker with usb cable they both charge like always. Also both charge fine on wireless chargers.
Smew, that would not be the case. 2 different vehicles, 2 phones, both stopped about the same time. Both have been charging in both vehicles for about 3 years.