iPhone 4S Power and Sensor Cable Assembly Replacement - iFixit Repair Guide

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Introduction

Internal prerequisite.

What you need

1. Step 1 Power and Sensor Cable Assembly
  Tool used on this step:
  Tweezers
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  Use the edge of a plastic opening tool to pry the earpiece speaker off the adhesive securing it to the outer case. Note that the power button cable is glued to the the case as well, and will need to be pried up.
  
  Use a pair of tweezers to unfold the earpiece speaker from its recess in the outer case.
  
  Be careful not to tear the cable from the earpiece speaker. They are adhered together, and the cable is very delicate.
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3. Step 2
  Use the edge of plastic opening tool to gently move the top sensor assembly away from the outer case.
  
  Gently pry the top sensor assembly off the outer case.
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4. Step 3
  Lift and remove the power and sensor cable assembly from the iPhone.
  
  Be sure not to lose the small retainer clip located on the top sensor assembly.
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Conclusion

To reassemble your device, follow these instructions in reverse order.

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