Just recently (2 days ago) my S III began having problems charging. While charging, it would actually lose charge. Right now, I was at 88% when I plugged in my charger, and now I'm down to 84% -- over about an hour or so.
It seems to charge fine on my car charger.
I've substituted different charging blocks and cables... all seem to act the same.
My daughter had the same problem about 2-3 weeks ago. Today she said hers works just fine.
So... what's happening?