For the last couple months my phone isn't liking my power cords when I try to recharge it. I'll plug it in and listen to it ding like it does when I unplug it, but it's still plugged in. I have to find a sweet spot of the weight of the cord on the USB slot in order for it to not act like it's disconnected. I was on a long drive using Google Maps this weekend (in the middle of nowhere) and the phone nearly died because it wasn't accepting power from the car charger. I have four power cords and I've used them all with the same symptoms. Could the USB connection be wearing out?
I don't know if this is related or not, but it seems like the battery is draining a little faster these days. I bought the phone in Nov 2012.