Introduction
If you are unable to use your headphones properly, the headphone jack may be faulty and needs to be replaced. Use this guide to replace your headphone jack.
Tools
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            Insert a plastic opening tool into the indentation at the bottom of the phone between the front and rear covers. 
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            Lift the back cover from the bottom and remove it from the phone. 
 
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            Insert a plastic opening tool, or your finger, into the notch in between the sim card and the battery and lift the battery upward. 
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            Remove the battery from your phone. 
 
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            Remove the 10 T4 Torx screws securing the midframe to the display assembly. 
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            Gently pry the midframe from the display assembly and remove it. 
 
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                            Conclusion
                          
                          To reassemble your device, follow these instructions in reverse order.