OnePlus 6 - Replace the fingerprint sensor

The fingerprint sensor no longer works.

  • OnePlus 6
  • 8 Steps
  • Difficult
  • 60 min.
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Introduction

This repair guide shows you how to replace the fingerprint sensor of your Galaxy S9. This fix is necessary, if your OnePlus 6 no longer recognizes your fingerprints or doesn't let you register new fingerprints.

The repair is somewhat more difficult because the OnePlus 6 has to be opened via the glass back cover.

Required tools

  • Flache Plektren

    Flache Plektren

    You need a very flat tool such as a flat pick to pry out parts that are glued in place.

    €1.00 at the iDoc store
  • Heat gun

    Heat gun

    You can use a heat gun to heat parts that are glued on so they’re easier to remove. In most cases, you can also use a hairdryer.

    from €14.99 on Amazon
  • For storing screws

    For storing screws

    We recommend storing your screws so you don’t mix up the various screws and small parts.

    €10.00 at the iDoc store
  • iPlastix

    iPlastix

    Dein Smartphone zu öffnen kann eine sehr empfindliche Angelegenheit sein. Die Klinge des biegsamen aber stabilen iPlastix hat eine Dicke von nur 0,15 mm, sodass es auch in den kleinsten Spalten reinpasst, beispielsweise zwischen dem Display und dem Rahmen oder unter dem Logicboard. Das praktische iPlastix ist aus biegsamem Kunststoff und liegt gut in der Hand. Damit ist es der perfekte Helfer bei jeder Smartphone-Reparatur.

    €9.00 at the iDoc store
  • Tweezers

    Tweezers

    We recommend using tweezers to remove screws and various small parts from your device.

    €16.00 at the iDoc store
  • Plastic prying tool

    Plastic prying tool

    You need a flat plastic prying tool to disconnect the various plugs and connectors.

    €1.00 at the iDoc store
  • Steel Laboratory Spatula

    Steel Laboratory Spatula

    You need a flat and sturdy prying tool to disconnect glued parts.

    €9.00 at the iDoc store
  • Phillips PH00 screwdriver

    Phillips PH00 screwdriver

    You need the right screwdriver for removing PH00 screws.

    €10.00 at the iDoc store
Show all replacement parts for the OnePlus 6 

Replacement parts and tools for this repair

Our tools plus the right spare part help you fix your device easily.

iPlastix

Dein Smartphone zu öffnen kann eine sehr empfindliche Angelegenheit sein. Die Klinge des biegsamen aber stabilen iPlastix hat...

for €9.00

Getting started

If you get stuck or have questions, you can post a comment for each step. We’d be happy to help.

8 steps
  1. Switch off the device

    OnePlus 6 - Switch off the device 01
    OnePlus 6 - Switch off the device 02

    Turn off your OnePlus 6 completely.

    1. Press and hold the standby button until the "Turn off" option is displayed.
    2. Confirm the power off with a second tap.
  2. Remove the back cover

    OnePlus 6 - Remove the back cover 01
    OnePlus 6 - Remove the back cover 02
    OnePlus 6 - Remove the back cover 03
    OnePlus 6 - Remove the back cover 04
    OnePlus 6 - Remove the back cover 05

    To loosen the back cover, use a heat gun or an ordinary hair dryer. Warm glue is easier to loosen, allowing you to remove the back cover. The easiest way to loosen the back cover is to use a flat and flexible tool such as the iPlastix or iFlex.

    You will also need several plastic picks to unstick the back cover all around.

    1. Heat the spot where you start.
    2. Press a flat tool between the back cover and the frame.

    The iPlastix is made of plastic, so it won't scratch the device. On the other hand, it's very soft and tricky to insert.You can use a suction cup to help lift the rear glass slightly.

    Be extra careful, the back cover can break very easily. If necessary, apply the heat several times and try again. Removing the back cover might take half an hour. Take a little more time and work carefully to make sure you don't break anything.

    1. Once the tool is inserted, stick a pick into the gap to keep it open.
    2. Then run the tool around the entire edge to gradually loosen the glue.
    3. Heat the next part and insert the picks one by one.
    4. Once the back cover is loosened, lift it very slightly. The fingerprint sensor underneath the camera is still connected with a cable.

    If your backcover is broken as well as in this case, you can try to leave it intact and not damage it further. You could use it again after replacing the display, as long as the cracks don't bother you.

  3. Disconnect the fingerprint sensor

    OnePlus 6 - Disconnect the fingerprint sensor  01
    OnePlus 6 - Disconnect the fingerprint sensor  02
    OnePlus 6 - Disconnect the fingerprint sensor  03
    OnePlus 6 - Disconnect the fingerprint sensor  04
    • Fingerprint Connector
    1. Now carefully lift up the loosened back cover and fold it over.
    2. Loosen the adhesive strip over the cover plate.
    3. Remove the cover over the connector with tweezers or your fingers.
    4. Then carefully disconnect the connector with a spudger or your fingernail and remove the back cover.
  4. Remove the fingerprint sensor

    OnePlus 6 - Remove the fingerprint sensor 01
    OnePlus 6 - Remove the fingerprint sensor 02
    OnePlus 6 - Remove the fingerprint sensor 03
    1. The fingerprint sensor is glued to the back cover.
    2. Heat the adhesive and carefully lever the flex cable off and along the edge of the sensor until it disengages.
    3. Remove the adhesive surface from the fingerprint sensor.
  5. Attach the fingerprint sensor

    OnePlus 6 - Attach the fingerprint sensor 01
    OnePlus 6 - Attach the fingerprint sensor 02
    OnePlus 6 - Attach the fingerprint sensor 03
    OnePlus 6 - Attach the fingerprint sensor 04
    1. If there's no new adhesive on your spare part, you can take it from your old fingerprint sensor.
    2. Place the fingerprint sensor in its opening in the back cover and press it down a little to make it stick.
  6. Connect the fingerprint sensor

    OnePlus 6 - Connect the fingerprint sensor 01
    OnePlus 6 - Connect the fingerprint sensor 02
    OnePlus 6 - Connect the fingerprint sensor 03
    OnePlus 6 - Connect the fingerprint sensor 04
    OnePlus 6 - Connect the fingerprint sensor 05
    OnePlus 6 - Connect the fingerprint sensor 06
    • Fingerprint Connector
    1. Put the back cover next to the device.
    2. Position the fingerprint sensor cable over its mainboard contact and connect it.
    3. Put on the cover with the red rubber piece. Reattach the black glue.
  7. Test the device

    OnePlus 6 - Test the device 01
    OnePlus 6 - Test the device 02
    OnePlus 6 - Test the device 03
    OnePlus 6 - Test the device 04

    Before you finally close the device again, you should test it.

    1. Turn on the device and check the screen first.
    2. Slide an app along the edge and zigzag it across the display to make sure the touchscreen responds correctly at all points.
    3. Also test the minimum and maximum brightness.
    4. Test the front and rear cameras and the flash.
    5. Call someone to test the microphone and earcup.
    6. Mute the phone to test the vibration motor.
  8. Attach the back cover

    OnePlus 6 - Attach the back cover 01
    OnePlus 6 - Attach the back cover 02
    OnePlus 6 - Attach the back cover 03

    You can reuse the glue still on the frame and back cover. Make sure that it is spread as evenly as possible and remove any glue that has wrinkled or protrudes.

    1. Heat the device again to soften the glue of the back cover.
    2. Press the back cover firmly onto the frame of the device.

    Clamp the device between a few books for example and give the glue an hour to set.

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