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The keypad inside the Nokia 3100b may eventually need replacement. This guide shows you how to access the keypad.
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            Make sure your phone is turned off. 
 
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            Press the button on the back of the phone and slide the back panel off. 
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            Remove the battery by pulling it from the phone. 
 
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            Push the black tabs down and pull the colored half of the phone from the white half. 
 
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            The front part of the phone is now removed. Make sure nothing was damaged while removing the front cover. 
 
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            Remove the keypad membrane by pulling it from the front cover. 
 
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To reassemble your device, follow these instructions in reverse order.
To reassemble your device, follow these instructions in reverse order.
