Introduction
Use this guide to replace the front-facing camera of the LG Optimus L90.
Tools
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            Carefully slide an opening pick between the the rear cover and the body of the phone. 
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            Using the pick, separate the cover from the back of the phone. 
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            Remove the rear cover. 
 
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            Insert a plastic opening tool int o the small recess at the bottom of the battery. 
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            Use the plastic opening tool to lift up the bottom of the battery. 
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            Remove the battery from the phone. 
 
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                            Conclusion
                          
                          To reassemble your device, follow these instructions in reverse order.