LockOnContacts - Are you worried about your private contacts being seen by others? Have a 'LockOnContacts' installed in your phone to lock all your contacts. Once locked these contacts can be viewed only by entering correct password. It also comes with auto lock feature by which phone's main screen gets locked automatically if you don't use your phone for user defined time.
QFind Contact Search Advanced phone book search application, capable of searching for phone numbers or number patterns and also contacts name patterns. All integrated to a very simple interface, QFind is undoubtedly a must have on any java supported phone