Samsung Galaxy S9 - Replace the back cover

The back cover is cracked or scratched.

  • Galaxy S9
  • 8 Steps
  • Medium
  • 30 min.
Go to the guide

Introduction

In this guide, we show you how to replace the defective back cover of your Galaxy S9. This repair can help if your back cover is broken or cracked, or you want a new color.

Click the small Play button in the top right of an image to play a video for each step.

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
  • iFlex opening tool

    iFlex opening tool

    Die kleinen Teile in deinem Smartphone auseinanderzukriegen kann eine sehr große Arbeit bedeuten. Die Klinge des kompakten aber stabilen iFlex 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 iFlex ist aus hochwertigem rostfreiem Stahl und liegt gut in der Hand. Damit ist es der perfekte Helfer bei jeder Smartphone-Reparatur.

    €9.00 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
  • Suction cup

    Suction cup

    A suction cup is perfect for lifting smooth surfaces such as displays or rear glass panels.

    €2.00 at the iDoc store

Required replacement part

  • Samsung Galaxy S9 Back Cover Schwarz / Midnight Black

    Samsung Galaxy S9 Back Cover Schwarz / Midnight Black

    Ist das Rückglas deines Galaxy S9 verformt, gebrochen oder zerkratzt? Du kannst es ganz leicht austauschen!

    €46.00 at the iDoc store
Show all replacement parts for the Galaxy S9 

Replacement parts and tools for this repair

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

Samsung Galaxy S9 Back Cover Blau / Coral Blue

Ist das Rückglas deines Galaxy S9 verformt, gebrochen oder zerkratzt? Du kannst es ganz leicht austauschen!

Werkzeugset Samsung

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

together for €95.00

Samsung Galaxy S9 Back Cover Lila / Lilac Purple

Ist das Rückglas deines Galaxy S9 verformt, gebrochen oder zerkratzt? Du kannst es ganz leicht austauschen!

Werkzeugset Samsung

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

together for €95.00

Samsung Galaxy S9 Back Cover Schwarz / Midnight Black

Ist das Rückglas deines Galaxy S9 verformt, gebrochen oder zerkratzt? Du kannst es ganz leicht austauschen!

Werkzeugset Samsung

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

together for €95.00

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. Switching off your device

    Galaxy S9 - Switching off your device 01
    Galaxy S9 - Switching off your device 02
    Galaxy S9 - Switching off your device 03
    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 device and wait until the screen goes blank.

    Klick the small Play button in the top right of an image to play a video for each step.

  2. Remove back cover

    Galaxy S9 - Remove back cover 01
    Galaxy S9 - Remove back cover 02
    Galaxy S9 - Remove back cover 03
    Galaxy S9 - Remove back cover 04
    Galaxy S9 - Remove 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 picks to unstick the back cover all around.

    1. Heat the spot where you start and place a suction cup on the bottom of the back cover.
    2. Press a flat tool between the back cover and the frame and pull on the suction cup.

    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.

    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. Then run the tool around the entire edge to gradually loosen the glue.
    2. Then heat the next part and insert the picks one by one.

    The back cover glue is extra strong on the lower edge.

    1. Once the back cover is loosened, lift it very slightly. The fingerprint sensor underneath the camera is still connected with a cable.
  3. Disconnect fingerprint sensor

    Galaxy S9 - Disconnect fingerprint sensor 01
    Galaxy S9 - Disconnect fingerprint sensor 02
    Galaxy S9 - Disconnect fingerprint sensor 03
    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. Remove fingerprint sensor

    Galaxy S9 - Remove fingerprint sensor 01
    Galaxy S9 - Remove fingerprint sensor 02
    Galaxy S9 - Remove fingerprint sensor 03
    Galaxy S9 - Remove fingerprint sensor 04
    Galaxy S9 - Remove fingerprint sensor 05
    1. Carefully run the steel spatula around the edges of the fingerprint sensor to unglue it.
    2. Once it is completely unglued, you can take out the sensor easily.
    3. If the sensor is hard to remove, use a heat gun to soften the glue.
  5. Prepare new back cover

    Galaxy S9 - Prepare new back cover 01
    Galaxy S9 - Prepare new back cover 02
    1. Remove all protective films from the back cover.
    2. Remove all adhesive residue from the display frame and fingerprint sensor.

    We didn't use a new rear glass panel for this guide, so you can see some glue residue on the reused rear glass in the following steps.

  6. Insert fingerprint sensor

    Galaxy S9 - Insert fingerprint sensor 01
    Galaxy S9 - Insert fingerprint sensor 02
    1. Put fingerprint sensor back into its original position on the back cover.
    2. Slightly press down the sensor so the glue bonds better.
  7. Connect fingerprint sensor

    Galaxy S9 - Connect fingerprint sensor 01
    Galaxy S9 - Connect fingerprint sensor 02
    Galaxy S9 - Connect fingerprint sensor 03
    Galaxy S9 - Connect fingerprint sensor 04
    • Fingerprint connector
    1. Before attaching the back cover, plug in the fingerprint sensor connector.
    2. Use a plastic tool to reach the connector.
  8. Attach back cover

    Galaxy S9 - Attach back cover 01
    Galaxy S9 - Attach back cover 02
    1. Before reattaching the back cover, check the glue. It should be sitting evenly on the back cover. You can remove any excess glue.
    2. Then press on the back cover.
    3. Heat the back cover again to bond the glue.
    4. You can press on the back cover with your fingers while the glue cools down.

    Please note that your smartphone's water ingress protection is no longer the same after you open it.

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