These are some common tools used to work on this device. You might not need every tool for every procedure.
Find most common hardware problems using the BlackBerry 8820 Troubleshooting Guide
Identification and Background
The BlackBerry 8820 was released in July 2007 with trackball navigation, wi-fi access, and external memory storage. This device is only compatible with GSM networks. The BlackBerry 8820 comes with a GPS, media player, organizer, document viewer, and voice dial. The device is equipped with a 1400 mAh Li-Ion battery giving a stand-by up to 520 hours or talk time up to 5 hours. If the phone turns on, you can verify your device is the 8820 by navigating to "Device Options" in your phone and clicking "About".