Introduction
This guide is to introduce step by step about replacing the SIM Card Slot of the LG Optimus L7 P705.
Tools
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            Insert a plastic opening tool between the seams of the device and pry the back cover away from the phone. 
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            Remove the battery and SIM card. 
 
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            Insert a plastic opening tool between the seams of the device and apply some pressure to lift off the cover. 
 
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            Flip over to the back of the device 
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            Using the plastic spudger, lift off the three board-to-board connectors on the left-hand side of the device. 
 
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                            Conclusion
                          
                          To reassemble your device, follow these instructions in reverse order.