Introduction
Remove the motherboard cover to take out the motherboard.
Tools
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            Insert a thumbnail, or spudger, into the notch on the bottom right corner to start separating the phone unit from the back cover. 
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            Move it to the bottom left corner and pry the phone unit out of the back cover until you can get a good grip. 
 
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            Insert an opening pick between the cover and the motherboard near the SIM 2 slot where the power buttons are located. 
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            Slide and twist the opening pick to pry open the plastic clips securing the cover. 
 
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            Slide an opening pick between the cover and the motherboard on the opposite side next to the SD card slot. 
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            Twist the opening pick to pry open the plastic clips securing the cover. 
 
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                            Conclusion
                          
                          To reassemble your device, follow these instructions in reverse order.