Hi guys, I've been enjoying my Pre3 but this week I've encountered a problem. USB no longer seems to function. When I plug it into a PC, it isn't recognized and doesn't show as charging. No charge when I plug it into the supplied power adapter either. I've tried 2 separate USB cables and neither work. I know the fault can't be the battery, because it charges just fine via the Touchstone.
The strange thing is, when I shut down the phone and remove the battery, then plug in the USB cable, the screen lights up asking me to insert a battery. So the phone is obviously receiving power. Any ideas as to whats going on? Thanks!