Introduction
In this guide, we will walk through the steps necessary to replacing the congestion-sensing antenna.
Tools
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            While holding the base firmly using the palm of one hand, remove the cowl (cover) by turning the cowl counterclockwise until a snap is heard. Once disengaged, pull upwards. 
 
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            Place the plastic opening tool under the speaker grille, and just above the light ring. 
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            Move the plastic opening tool around the groove while applying upward force to pry loose the 4 clips holding the grille in place. 
 
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            Using a metal spudger, carefully remove the congestion-sensor antenna by undoing the two clips. 
 
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            Remove the wire connection to the antenna by soldering it off. 
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            For help with soldering and de-soldering check out the iFixit Soldering Guide 
 
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To reassemble your device, follow these instructions in reverse order.