Samsung Galaxy S8+ - Replacing the fingerprint sensor

The fingerprint sensor no longer recognizes your fingerprint.

  • Galaxy S8+
  • 6 Steps
  • Medium
  • 30 min.
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Introduction

This repair guide shows you how to replace the fingerprint sensor of your Galaxy S8 Plus. This fix is necessary, if your Galaxy S8 Plus no longer recognizes your fingerprints or doesn't let you register new fingerprints.

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
  • Steel Laboratory Spatula

    Steel Laboratory Spatula

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

    €9.00 at the iDoc store

Required replacement part

  • Samsung Galaxy S8 / S8+ Fingerabdrucksensor Midnight Black

    Samsung Galaxy S8 / S8+ Fingerabdrucksensor Midnight Black

    Dieses Ersatzteil brauchst Du, wenn dein Samsung Galaxy S8 oder S8 Plus deinen Fingerabdruck nicht mehr erkennt oder du keine neuen Fingerabdrücke mehr registrieren kannst. Dazu baust du dieses Teil in dein Backcover ein. Auch bekannt als Fingerprint-Sensor und Fingerabdruck-Scanner.

    €23.00 at the iDoc store
Show all replacement parts for the Galaxy S8+ 

Replacement parts and tools for this repair

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

Samsung Galaxy S8 / S8+ Fingerabdrucksensor Arctic Silver

Dieses Ersatzteil brauchst Du, wenn dein Samsung Galaxy S8 oder S8 Plus deinen Fingerabdruck nicht mehr erkennt oder du keine...

Werkzeugset Samsung

Ganz gleich, welches Problem dein Handy hat - mit unserem Werkzeugset kannst du es bestimmt beheben. Dieses Reparaturset umfasst jeweils einen...

together for €72.00

Samsung Galaxy S8 / S8+ Fingerabdrucksensor Midnight Black

Dieses Ersatzteil brauchst Du, wenn dein Samsung Galaxy S8 oder S8 Plus deinen Fingerabdruck nicht mehr erkennt oder du keine...

Werkzeugset Samsung

Ganz gleich, welches Problem dein Handy hat - mit unserem Werkzeugset kannst du es bestimmt beheben. Dieses Reparaturset umfasst jeweils einen...

together for €72.00

Getting started

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

6 steps
  1. Switching off your device

    Galaxy S8+ - Switching off your device 01
    Galaxy S8+ - Switching off your device 02
    1. Turn off your device by holding down the power button until the “Power off” option appears.
    2. Use your finger to confirm that you want to shut down your Galaxy S8 Plus and wait until the screen goes blank.
  2. Removing the back cover

    Galaxy S8+ - Removing the back cover 01
    Galaxy S8+ - Removing the back cover 02
    Galaxy S8+ - Removing the back cover 03
    Galaxy S8+ - Removing the back cover 04
    Galaxy S8+ - Removing the back cover 05
    Galaxy S8+ - Removing the back cover 06
    1. The back cover’s really glued to the chassis. Heat the device evenly with hot air to soften the glue.
    2. Then carefully try to lift the rear glass using a flat, blunt tool. It’s best if you find a loose spot where you can insert the first pick. Then work your way around the device step by step.

    Use a suction cup to lift the glass if you can’t find anywhere to insert the toolThis step can take a pretty long time. You may have to heat the rear glass or the glue a few more times before you can finally detach itDon’t take off the back cover all the way because you have to disconnect the connector for the fingerprint reader first.

  3. Disconnecting the fingerprint sensor

    Galaxy S8+ - Disconnecting the fingerprint sensor 01
    Galaxy S8+ - Disconnecting the fingerprint sensor 02
    Galaxy S8+ - Disconnecting the fingerprint sensor 03
    Galaxy S8+ - Disconnecting the fingerprint sensor 04
    1. After detaching the back cover, carefully lift it and disconnect the fingerprint sensor using the spudger.
    2. Then you can completely remove the back cover and set it aside.
  4. Removing the fingerprint sensor

    Galaxy S8+ - Removing the fingerprint sensor 01
    Galaxy S8+ - Removing the fingerprint sensor 02
    Galaxy S8+ - Removing the fingerprint sensor 03
    1. Carefully slide in a steel spatula where the wireless charging coil is glued to the NFC antenna and pry off the contact.
    2. Now slowly remove the entire flex cable from the cover.

    If the cable is hard to remove, you can use a heat gun to soften the glue

    The images show the rear panel of a Galaxy S8. The Galaxy S8 Plus has the same glass panel.

  5. Inserting the fingerprint sensor

    Galaxy S8+ - Inserting the fingerprint sensor 01
    Galaxy S8+ - Inserting the fingerprint sensor 02
    Galaxy S8+ - Inserting the fingerprint sensor 03
    1. Insert the fingerprint sensor into its intended position in the back cover.
    2. Slightly press down the sensor to make it stick.
  6. Attaching the back cover

    Galaxy S8+ - Attaching the back cover 01
    Galaxy S8+ - Attaching the back cover 02
    Galaxy S8+ - Attaching the back cover 03
    Galaxy S8+ - Attaching the back cover 04
    Galaxy S8+ - Attaching the back cover 05
    1. Put the back cover back in its original position.
    2. Connect the fingerprint sensor again.
    3. Press the back cover on all over so the glue will stick.

    You can also heat your device with hot air and then clamp it or weight it down with a couple books so the glue will stick better.

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