I have a Samsung Galaxy III that I've had for 17 months. A couple of my battery charges will no longer work and the others I have to work really hard to position the charger in the port in order to get the phone to recognize that it's there and to charge. I read somewhere about using a toothpick to clean out lint, but found no lint. It's more feeling like my port is bigger and the connection to a charger looser than it used to be. Any ideas? Or does the port loosen up/expand over time and I'm going to have to buy a new phone?