Although the LED light serves multiple good and useful purposes, many BlackBerry users find its constant blinking annoying or distracting. For this reason, RIM allows you to customize which alerts you want your LED to perform and which you prefer to bypass using on your BlackBerry.
If you don’t wish to be notified whenever you’re receiving voice coverage, simply log onto your Options menu and select Screen/Keyboard.
On the Screen and Keyboard options list, you will see an option to turn your Coverage Indicator on or off.
Also in the Options menu, you can create settings for using Bluetooth devices with your BlackBerry. By adjusting your profiles, you can also designate whether or not you’d like to be notified of new incoming messages or not.