Introduction
By following this guide you should be able to replace the headphone jack in 10-20 minutes. By replacing the headphone jack, you will fix any headphone related audio issues such as static, muffled sounds, or poor earphone audio quality.
Tools
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            Using your hands, carefully remove the back panel by popping the open slit, near the headphone jack, outwards. 
 
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            Using your fingernail or nylon spudger, remove the battery by lifting upward in the recess of the bottom right corner. 
 
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            Using the nylon spudger, carefully unhinge and pry the secondary rear panel using the recessed tabs on the left and right sides. 
 
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            Using the spudger lift the speaker assembly upward, so you may have access to the headphone assembly. 
 
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            Using the spudger, carefully unplug and remove the headphone port assembly by lifting upward on the ribbon cable. 
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            The headphone jack should lift off of the motherboard. 
 
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To reassemble your device, follow these instructions in reverse order.