Contact Book Lock app allows you to prevent unauthorized access to your Contact Book. With Contact Book Lock, you can lock your BlackBerry® Contact Book with your own password and prevent your friends, family members, coworkers or any other people from getting into the Contact Book app in your BlackBerry® without your permission.
Features:
* Quickly Enable/Disable the lock
* Neat & simple User Interface
* Low memory consumption.
* Supports BlackBerry® OS 4.6.0 to 7.0.0.
Get it via App World