I have a 16GB iPhone (unlocked, not that it should make a difference) that will only charge with the cable that came in the box or with the dock. I have a cable from an older iPod which works fine with my old 8GB iPhone but wont work when plugged in to the new 16GB. If it is plugged in to the dock and the phone sat in the dock it works. Do I have a bust iPhone???? Help!!!!!