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Proximity Sensor not working after repair

Hi. I have recently replaced an iPhone 7 Screen. After a few days, the proximity sensor has stopped working, so when on a call, the other person can hear my cheek pressing buttons. Any ideas?

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There are a number of reasons why this can happen:

  • The sensor is not properly aligned. Tear down and reassembly may help fix this. Make sure the plastic bracket is properly positioned like in the original;
  • The sensor cable or sensor solder joints were damaged during the transfer and now the whole front camera cable assembly needs to be replaced;
  • The cable needs reseating into the connector on the board;
  • The screen itself is somewhat defective and allowing too much light through. Specially for the black screens. Transfer the small white filter or try coloring a little bit the opening where the sensor sits behind the screen.

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The tear down some what helped, along with the light issue. When transferring the old sensor cables off of the smashed screen, I never transferred the light filter, or the clear plastic gasket that was holding part of the sensor in place. I was unable to transfer the white filter over as when trying to peel this away, the filter scratched away. I have found a white sticky label at home that I have put in its place, in the hope that this would have worked, and so far, there have been no issues with this.

Thank you for your help!

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Try to take it back apart and check connecting to logic board, If that checks out replace Proximity Sensor, Very common part to break durning repair.

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