How to fix iPhone 7 front facing camera voice low after LCD screen replacement?

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Recently we got a customer feedback that the voice of iPhone7 front-facing camera microphone is small after replacing the LCD screen. Our company attaches great importance to this issue and submitted it to our tech central. After careful depth learning and practice, our engineers found it was caused by the incorrect installation of the sensor cable. The wrong installation of sensor cable leads to the microphone can’t be installed to the correct position, which causes the microphone dysfunction. Following are how to fix this issue.
Step 1 Remove the Plate and Ear Speaker
Undo 5 screws shown as below with a screw driver then you can remove the plate and ear speaker easily.
undo 5 screwsremove the plateremove the ear speaker
Step 2 Reinstall the Flex Cable
Take out the flex cable with a tweezers then reinstall it. As the two pictures shown below, the first one is correct installation and the second one is incorrect.
correct installationincorrect installation
Step 3 Assemble the Ear Speaker and Plate
Put back the ear speaker and plate then tighten the 5 screws.
install the ear phoneinstall the plate

The solutions to fix the front microphone voice issue is completed now and the same procedure for iPhone 7 Plus.
This article comes from Etrade Supply Blog
To know more about the operation please visit the video.

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