Go to Options > Security Options > General Settings > BB Menu > Wipe Handheld Will completely destroy all data on the phone and reset to factory default
a jl commander wipe.... or i think if you password protect it and enter wrong password enough times it wipes all your info off of it. not sure on the second one someone else might know if the password trick works
Also dial ##000000 and press send. This will take you into the CDMA Service Edit Window and it will allow for you to delete your phone number from the device.
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