Introduction
Tools
Parts
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Shutdown your phone.
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Remove the back cover of the phone
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Unscrew all the screws identified in red in the picture.
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Remove the plastic covers using your fingernails or a plastic tool.
 
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Carefully peel off the 3 metal stickers (connectors) identified in white on the photo with a flat screwdriver.
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Cut pieces of a sheet of cardboard or a sheet thick enough to the size of the stickers.
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Glue a piece of cardboard or thick paper under each sticker to create extra thickness.
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Replace the stickers in their original location (they will no longer stick to the shell, but that's okay).
 
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Reassemble the phone by repeating the previous steps, taking care to tighten the screws properly when reassembling
 
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                            Conclusion
                          
                          To reassemble your device, follow the instructions in reverse order.