I have a unique problem with my 2G iPhone on s/w 1.1.4 Sound is only coming from the built-in speaker on the iPhone, even with headphone plugged in. I have tried suggestions in other threads, where other users are having problems opposite to mine, ie sound only from headphone, not speaker. Things I have tried are cleaning the headphone jack, plugging in and out the headphone, resetting the iphone via Settings/General/Reset/Reset All Setting, virginize, all do not work. My iPhone is now a phone, with no ipod functions since I can't listen to music thru the headphones. Anyone has any suggestions? Thanks!!