Introduction
Use this guide to replace the old battery in your Nokia 1100b RH-36.
Tools
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            Flip the phone over so that the screen faces down. 
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            Press the gray button on the battery cover and slide it down off the back of the phone. 
 
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            Wedge the flat end of the spudger into the small indent next to the Nokia logo on the battery. 
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            Gently pry the battery out of the phone. 
 
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                            Conclusion
                          
                          To reassemble your device, follow these instructions in reverse order.