The sound has stopped working on my sony xperia 10. There is no sound coming out of the speakers. I have reset the phone, started it in safe mode and enabled then disabled DSEE but nothing has worked. When i plug in headphones I can hear the sound through them. If i plug in and unplug the headphones 20-30 times maybe the speakers will start to work again. However, as soon as i turn the sound up or down with either the buttons on the side or just on the screen the speakers stop working and Im back to square one. All this would indicate a software issue rather than a hardware problem.