"How To" Erase all contact information on a Blackberry.

>Options>Security>General Settings>Wipe Handheld Sets the phone back to factory defaults but some information may still remain. To completely wipe the handheld, here are a couple tips.

1) Assign a password to the device and then input the password wrong 10 times !
* To assign a password to a BB device: Go to home screen and select "Options" (this is an icon that looks like a wrench). Select "Security" from the Options list. Go to the line item that says Password. Use the trackwheel to enable the password. When you save the settings, the device will ask you to enter a new password. Assign a alphanumeric password to the device.
* Input the password wrong 10 times: Power cycle the device (power if off and then back on). The device will ask you for your password. Input a wrong password 10 times. The device will give you a few warning messages. After the 10th attempt, the device will erase all user data and do a power cycle.

1) Erase all data using the "desktop manager" software
* Launch the Blackberry "desktop manager" software utility on your PC and make sure that it is connected to the BB device in the cradle.
* Launch "Backup and Restore" utility from the desktop manager menu.
* Click on the button that says "Advanced..".
* The application will read all the data from the device, organize them, and then display on the screen (on the right column). Select all the data (email, calendar, phone logs, browser bookmarks, etc.) that you want to erase. You can select multiple entries by holding on to the CTRL button while you select them. Click on the button labeled "Clear" to erase all the data from the device.