This is hard to explain without actually seeing it, but let me try. When i control the volume from the screen (not from volume rocker or headphone volume control) the volume does work, but the little volume control ball thing does not move from its place. Every time i try to move it to the right to increase the volume, it keeps going back from where i moved it from, BUT, the volume does increase. When i restarted my phone, it worked normally again but now the problem is back. Help?