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The Nokia 3100b may not vibrate anymore when the phone is set in Vibrate mode. This guide will show you how to access the vibrating unit.
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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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            Gently pull back the small metal frame holding the SIM card into place, and lift open the frame. 
 
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            Separate the front cover from the base of the phone. 
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            Set the front cover, as indicated, aside. 
 
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            Remove the screws indicated using a T6 Torx screwdriver. 
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            Remove them in the order of the colors of the rainbow. (Red, Orange, Yellow, Green, Blue, Purple). 
 
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            Separate the screen assembly from the base of the phone. 
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            Set the screen assembly, as indicated, aside. 
 
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            The vibrating unit can now be accessed. Note its location in the phone. 
 
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            The vibrating unit is held in place by friction. Access the bottom of the unit and push upward to release it from the base. 
 
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To reassemble your device, follow these instructions in reverse order.
To reassemble your device, follow these instructions in reverse order.
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