I'm wondering if you have the same problem I do. The volume for my SMS ringer is always the same (very loud) regardless of what setting I have for it. Whether I choose 1 for lowest or 7 for highest, it is still the same volume. This doesn't happen for incoming calls, though- the phone ringer volume changes correctly depending on the setting that is currently selected. I've contacted the developer and I was told to not check "maximum ringtone sound" but this setting has never been checked. I haven't heard back since I replied telling him this. I would like to know if you have the same issue. Thanks.