I hate that I can't turn down the touch tone volume separately from the ringer volume. That is just silly. I did install several volume control apps which separate out system volume from ringer, but if when you adjust one, the other adjusts also. There is an app or two that seem to let you adjust them separately, but then if you switch screens and come back to the volume adjustment screen, both are at the same level again. Why do I want this? Sometimes I want my ringer to be loud so I can hear it, but I don't want to blast my co-workers out of the office when I try to dial a number. No reason for them to be tied together.