sound profiles

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Profile Scheduler - set your sound profiles to automatically change with your schedule
Profile Changer for BlackBerry OS 7.1 takes care of profile management for you
An unintended consequence of switching from BlackBerry to iPhone
How To Setup a Vibrate Only Profile on your BlackBerry
Geek Pro: Make the notifications on your BlackBerry work for you
How to set and edit sound profiles on your BlackBerry