Introduction
The guide will show you how to remove and install the BlackBerry's keypad.
Tools
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            Turn over your BalckBerry 7100g so that the back cover is facing up. 
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            Locate the battery cover release button near the bottom of the back panel. 
 
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            Push down on the release button with one thumb. 
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            Slide the battery cover off with the other thumb. 
 
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            Locate the silver strip near the top of your BlackBerry. 
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            Use a plastic opening tool to pry off the edge of the silver lining. 
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            Slide the tool along the length of the silver strip to completely remove it. 
 
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            Tightly pinch the top of the front and back halves of the housing. 
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            Carefully pry the two halves of the housing apart. 
 
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            Turn the "guts" over so the speaker is facing up. 
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            Locate and unscrew the four (4) screws near the bottom of the motherboard, using a T6 screwdriver. 
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            Separate the battery housing from the motherboard. 
 
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To reassemble your device, follow these instructions in reverse order.