Galaxy S3 won't charge properly anymore.
So recently, I noticed that I could plug in my phone to charge and it would take 2 hours just to get from 20% to 21%, and it was quick to drain as soon as it was taken off the charger. Then it started having problems actually recognizing the charger was there, quickly switching from charge/discharge as if it couldn't decide what was happening. With my old phone, when it stopped recognizing the charger I just got a new one, but I've tried 4 different chargers with this phone and still nothing changes. Is there anything I can do to fix it, like a certain type of charger (like could I get one of those charging pad things?), a different battery or could it be the USB port? Because I noticed the port seems a little loose. Help please!