BlackBerry touch-screen devices — such as the Torch, Storm and Bold 9900 — use BlackBerry’s SurePress technology. When it comes to resetting your touch-screen BlackBerry, you have a couple of different options. The first — a hard reset — powers off your device completely and then restarts it. A hard reset can be helpful if you’re experiencing a problem with your device. The second option is a master reset, or security wipe. This option resets the BlackBerry back to factory default settings and deletes all information, including contacts, messages and photos.
Slide the battery cover off the back of your phone.