Introduction
Rear case replacement will only require the removal of the battery and six screws, but prying the case loose may take a few minutes.
Tools
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            Insert the plastic opener into the slot at the top of the device. 
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            Apply gentle pressure with the plastic tool to pop the back case off. 
 
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            Use a screwdriver and corresponding bit to remove the six 2mm screws that are located along the edge of the rear case. Set the screws aside. 
 
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                            Conclusion
                          
                          To reassemble your device, follow these instructions in reverse order.