the call is automatically sent directly to voice mail.If not, then the caller will hear a busy tone when they call you andyou have filtered their number. Numbers can be added through theaddress book, call log or keyed in manually. The missed call indicatoris visible on each blocked call. Depending on your CPU and memory load,there may be a slight delay before a call is rejected. This is normalapp behavior.
              
Features:

    * Filters designated calls
    * Filters calls even while on an active phone call (call waiting)
    * Choose if a blocked caller goes direct to voicemail or receives a busy tone
    * Add a filter from the Address Book
    * Add a filter from the Phone Call Log
    * Add a filter by directly typing in the number
    * Disable call filtering without deleting all your previous entries
    * Provides blocked call statistics
    * Allows to Block All Calls
    * Allows to Block Private (number withheld) and Unknown calls
    * Allows blocking calls that are not in the address book

Minimum Requirements:                                                       

    * BlackBerry OS 4.5+

Display Dimensions
   160x160, 240x160, 240x240, 240x260, 240x320, 320x240, 360x480, 480x320, 480x360
Operating System
   4.5, 4.6, 4.7 Non-Touch, 4.7 Touch Screen, 5.0 Non-Touch, 5.0 Touch Screen