I discovered the same problem this morning with my S3 when plugging it in. Just so happens this is the very first time I did not charge my phone overnight! Tried to charge it on about 5 different charging cords. Called Sprint and they said first step is to blow some air into the port for the charger. Believe it or not, it worked. I presume with all the exposure phones have to fibers, dust, and fuzz, there's bound to be a little buildup in that port. Think about it, between pockets and handbags it's gonna happen eventually. So before you decide to DROP your phone and risk damage, just blow into the port and see if that works first. Troubleshoot first, drop phone LAST!![]()