Resetting a BlackBerry Curve to factory settings deletes all information, applications and files stored on the device, returning it to the same settings and level of functionality as when the phone was shipped. Resetting the Curve is important when you are upgrading to a newer BlackBerry or returning the device to your company's information technology department. All sensitive information is deleted from the phone during the factory reset process, and all e-mail accounts and other synchronised data is also deleted. In fact, after resetting the Curve to factory specifications, the new hardware set-up application runs automatically.
Press the menu button and click the "Options" icon from the BlackBerry home screen.
Click "Security Options."
Scroll down to and select "General Settings."
Press the BlackBerry menu key and choose "Wipe Handheld."
Check the box next to "Include third-party applications" and then click "Continue" to confirm that you want to erase all data on your BlackBerry Curve and return to factory settings.
Type "blackberry" in the dialogue box that appears to confirm you want to complete the handheld wipe to factory settings. This is the final safeguard to keep you from accidentally deleting all data stored on the Curve.
Wait for all information to be wiped from the BlackBerry Curve, after which the phone restarts and a box appears prompting you to run the Setup Wizard application. At this point, all information has been deleted from the Curve and it is returned to factory settings.