Turn on or turn off event sounds

Event sounds alert you when you turn on or turn off your BlackBerry smartphone, when the battery power level is full or low, and when you connect or disconnect a USB cable or accessory to or from your smartphone.
  1. On the home screen or in a folder, click the Options icon.
  2. Click Accessibility.
  3. Change the Event Sounds field.
  4. Press the Menu key > Save.