[danc56]

The same thing happens to me if I place the phone on vibrate while using a bluetooth headset. If I receive a phone call the phone automatically switches to the silent mode after the call is answered. If I use the "audio" ringtones, the phone never reverts to the silent mode. I have set it on vibrate when I'm in an area where I do not wish to disturb anyone with a call and that's when it changes to the silent mode. Perhaps there will be a fix that someone from Sprint can provide for us.