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Huawei p30 lite proximity not working

Discussion in 'Android Devices' started by jhnelo, Jun 25, 2020.

  1. jhnelo

    jhnelo Well-Known Member
    Thread Starter

    Had a screen replaced and now proximity sensor isn't working. Sent it back to have it fixed, they've fitted a new one and still isn't working. Anyone had this problem before?

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  2. svim

    svim Extreme Android User

    Try installing this AIDA64 app, it's a utility that just summarizes your phone's hardware and software.
    Start the app and tap on 'Sensors', and wait a few seconds for it to access thing. There should be a Proximity sensor in the resulting listing. On the phone I'm looking at it only shows two conditions - 100 cm and 3 cm (the former holding the phone out, the latter when I hold my hand close to the approximate sensor location). Your numbers will probably vary.

    You mentioned sending your phone back in again to the problem fixed, but could you provide more details as to just what was done as far as, "...they've fitted in a new one..."? Only on some models (very few) different sensors might be modular (therefore more easily replaceable) but for the most part most of them are soldered directly to the circuit boards. With most smartphone models, replacing a failed component is usually a matter of replacing the entire motherboard. With something like the Proximity sensor, it does need to be outward facing exposure and replacing the display typically requires a complete tear-down of the phone so while there is a chance the sensor itself was damaged in the process, it's also more likely to be just a bad alignment issue (the sensor now isn't lining up with the viewing opening internally.)

    Or do you have your P30 in a case? Could it just be a matter of the phone has shifted out of place and part of the case is blocking the sensor?
    Do you know if your phone was phone repaired at a local shop or was it sent out to the manufacturer?
  3. jhnelo

    jhnelo Well-Known Member
    Thread Starter

    So downloaded the app and ran the test and the result I was getting was 5cm. It didn't matter if I put my hand near or far it never changed.

    So after it was sent back to have the sensor replaced, all I know is they've took the old one out and put in a new one as they've given me the old one in a plastic bag. I've included a picture of the one that has been taken out.

    Regarding a case and screen protector both were removed prior to sending it back just to make sure they weren't the problem.

    Attached Files:

  4. svim

    svim Extreme Android User

    Apparently only the front and back cameras are replaceable, discrete components, the proximity sensor is not. For an approximate location, it will be located near the top of the phone facing frontward, in the general area close to the front camera module (see steps 17 and 18 in the link below):
    Presumably since everything else is soldered into the primary motherboard, whatever part they sent you (in those two photos) may or may not even be from a P30 Lite phone. Suspect it isn't. Do you know if your phone was serviced by a local shop or was it sent in to Huawei?
  5. jhnelo

    jhnelo Well-Known Member
    Thread Starter

    Doubt they've even replaced the sensor then as it was only sent to a local repair shop.
  6. svim

    svim Extreme Android User

    The proximity sensor not working after they replaced the display should be something they're held responsible for. Have you paid the bill for the initial repair already?
    (note that if they did go through the process of replacing the motherboard, the resulting situation would be a matter of a clean, new install of Android -- the internal storage chip on the old board is gone).

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