Samsung Galaxy S9+ back cover replacement guide

The back of the enclosure is broken or scratched.

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

Introduction

With this detailed step-by-step guide, you can easily replace the back cover of your Galaxy S9+ at home.

Removing the back cover is a rather cumbersome procedure, so plan enough time for it.

Do a backup before the repair, use a clean work surface and reserve enough time. If you are stuck at any point, just contact our live chat or write a comment on the corresponding step.

Required tools

  • Flat Picks

    Flat Picks

    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
  • iFlex opening tool

    iFlex opening tool

    Taking apart the little pieces in your smartphone can be a big pain. The iFlex is tough but compact with a blade thickness of just 0.15 mm so it fits into even the smallest spaces, like the gap between the display and frame or under the logic board. The iFlex is made of stainless steel and designed for a good grip, making this convenient tool the perfect assistant for every smartphone repair.

    €9.00 at the iDoc store
  • iPlastix

    iPlastix

    Taking apart the little pieces in your smartphone can be a big pain. The iPlastix is tough but thin with a blade thickness of just 0.15 mm, so it fits into even the smallest spaces, like the gap between the display and frame or under the logic board. The iPlastix is made of durable plastic and designed for a good grip, making this convenient tool the perfect assistant for every smartphone repair.

    €9.00 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

Required replacement part

  • Samsung Galaxy S9+ Back Cover in Black / Midnight Black

    Samsung Galaxy S9+ Back Cover in Black / Midnight Black

    Is the back cover of your Galaxy S9+ deformed, cracked or scratched? You can replace it real easy!

    €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 in Blue / Coral Blue

Is the back cover of your Galaxy S9+ deformed, cracked or scratched? You can replace it real easy!

Samsung Toolkit, 16 pieces

Whatever’s wrong with your phone, our tool kit can help you fix it. Each repair kit includes a steel laboratory spatula, an opening tool, a...

together for €95.00

Samsung Galaxy S9+ Back Cover Blue-White / Polaris Blue

Is the back cover of your Galaxy S9+ deformed, cracked or scratched? You can replace it real easy!

Samsung Toolkit, 16 pieces

Whatever’s wrong with your phone, our tool kit can help you fix it. Each repair kit includes a steel laboratory spatula, an opening tool, a...

together for €95.00

Samsung Galaxy S9+ Back Cover Gold / Sunrise Gold

Is the back cover of your Galaxy S9+ deformed, cracked or scratched? You can replace it real easy!

Samsung Toolkit, 16 pieces

Whatever’s wrong with your phone, our tool kit can help you fix it. Each repair kit includes a steel laboratory spatula, an opening tool, a...

together for €95.00

Samsung Galaxy S9+ Back Cover Grey / Titanium Grey

Is the back cover of your Galaxy S9+ deformed, cracked or scratched? You can replace it real easy!

Samsung Toolkit, 16 pieces

Whatever’s wrong with your phone, our tool kit can help you fix it. Each repair kit includes a steel laboratory spatula, an opening tool, a...

together for €95.00

Samsung Galaxy S9+ Back Cover in Purple / Lilac Purple

Is the back cover of your Galaxy S9+ deformed, cracked or scratched? You can replace it real easy!

Samsung Toolkit, 16 pieces

Whatever’s wrong with your phone, our tool kit can help you fix it. Each repair kit includes a steel laboratory spatula, an opening tool, a...

together for €95.00

Samsung Galaxy S9+ Back Cover in Black / Midnight Black

Is the back cover of your Galaxy S9+ deformed, cracked or scratched? You can replace it real easy!

Samsung Toolkit, 16 pieces

Whatever’s wrong with your phone, our tool kit can help you fix it. Each repair kit includes a steel laboratory spatula, an opening tool, a...

together for €95.00

Getting started with the repair of your Galaxy S9+

If you get stuck or have questions, you can post a comment. 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
    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 S9+ and wait until the screen goes blank.
  2. Removing the back cover

    Galaxy S9+ - Removing the back cover 01
    Galaxy S9+ - Removing the back cover 02
    Galaxy S9+ - Removing the back cover 03
    Galaxy S9+ - Removing the back cover 04
    Galaxy S9+ - Removing the back cover 05
    1. The back cover’s really glued to the chassis. Heat the device evenly with hot air to soften the glue. A temperature of 60 - 80°C should be sufficient. As a rule of thumb, you should still be able to touch your device without it being uncomfortably hot.
    2. 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 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.

    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.

    Use a suction cup to lift the glass if you can’t find anywhere to insert the tool

  3. Disconnecting the fingerprint sensor

    Galaxy S9+ - Disconnecting the fingerprint sensor 01
    Galaxy S9+ - Disconnecting the fingerprint sensor 02
    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 S9+ - Removing the fingerprint sensor 01
    Galaxy S9+ - Removing the fingerprint sensor 02
    Galaxy S9+ - 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 S9. The Galaxy S9+ has the same glass panel.

  5. The right tools for your repair

    With the right tools, you will succeed in any repair. In our store you will find a large selection of professional quality tools.
    VIEW NOW
  6. Preparing the new rear glass panel

    Galaxy S9+ - Preparing the new rear glass panel 01
    Galaxy S9+ - Preparing the new rear glass panel 02
    1. Remove all protective films from the display.
  7. Inserting the fingerprint sensor

    Galaxy S9+ - Inserting the fingerprint sensor 01
    Galaxy S9+ - Inserting the fingerprint sensor 02
    1. Insert the fingerprint sensor into its intended position in the back cover.
    2. Slightly press down the sensor to make it stick.

    The images show the rear panel of a Galaxy S9. The Galaxy S9+ has the same glass panel.

  8. Connect fingerprint sensor

    Galaxy S9+ - Connect fingerprint sensor 01
    Galaxy S9+ - Connect fingerprint sensor 02
    Galaxy S9+ - Connect fingerprint sensor 03
    1. Before attaching the back cover, plug in the fingerprint sensor connector.
    2. Use a plastic tool to reach the connector.
  9. Attaching the back cover

    Galaxy S9+ - Attaching the back cover 01
    1. Put the back cover back in its original position.
    2. 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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