Einleitung
This guide will demonstrate how to remove the trackball on a BlackBerry 8820. To reassemble the device, please follow the instructions provided in reverse order.
Always exercise caution when handling electronic components.
Werkzeuge
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            Remove the battery cover by applying pressure and sliding down the silver square on the back of the phone. 
 
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            Remove the battery by prying under it with your finger or the plastic opening tool. 
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            Remove the four small 3/8" long screws using a 1/16" diameter torx screwdriver. 
 
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            After removing the front from the outer casing, the track ball will come off attached to the casing. 
 
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                            Abschluss
                          
                          To reassemble your device, follow these instructions in reverse order.