You need to clean the logic board.

In this guide, we show you how to remove your Galaxy S4 Active’s PCB on your own. You need to remove the logic board if you want to clean it.

Required tools

  • For storing screws

    For storing screws

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

    from €10.99 on Amazon
  • Menda ESD Spudger

    Menda ESD Spudger

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

    from €26.38 on Amazon
  • iDoc Tool Kit, 21 pieces

    iDoc Tool Kit, 21 pieces

    Do you need to repair your smartphone? This kit includes all the tools you need for professional-quality repairs, from the ESD spudger and suction cup, to screwdrivers and tweezers, as well as the iDoc magnetic pad that holds your screws and small parts in place while you work. Not sure what goes where? Don’t worry – our detailed repair guides tell you what tool to use for each step.

    from €29.99 on Amazon
  • Phillips PH00 screwdriver

    Phillips PH00 screwdriver

    You need the right screwdriver for removing PH00 screws.

    from €10.84 on Amazon
Show all replacement parts for the Galaxy S4 Active 

Getting started with the repair of your Galaxy S4 Active

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

16 steps
  1. Removing the back cover

    Galaxy S4 Active - Removing the back cover 01
    Galaxy S4 Active - Removing the back cover 02
    Galaxy S4 Active - Removing the back cover 03
    Galaxy S4 Active - Removing the back cover 04
    1. There are little clips attaching the back cover to the chassis. The back cover has a little recess right over the power button. Using your fingernail or the spudger, you can lift the cover here.
    2. Carefully disconnect the back cover from the chassis.
    3. Remove the back cover.
  2. Removing the battery

    Galaxy S4 Active - Removing the battery 01
    Galaxy S4 Active - Removing the battery 02
    Galaxy S4 Active - Removing the battery 03
    1. Remove the battery with your fingers. There’s a little hollow in the chassis for lifting out the battery.
    2. Remove the battery.
  3. Removing the SIM and microSD cards

    Galaxy S4 Active - Removing the SIM and microSD cards 01
    1. Remove the SIM card and the microSD card.
  4. Removing the four metal shields

    Galaxy S4 Active - Removing the four metal shields 01
    Galaxy S4 Active - Removing the four metal shields 02
    Galaxy S4 Active - Removing the four metal shields 03
    Galaxy S4 Active - Removing the four metal shields 04
    1. Use the steel laboratory spatula to remove the four metal shields. Use the spatula to pry the covers out of the hollows in the chassis. You can get the tip of the spatula under the covers.
  5. Removing the chassis screws

    Galaxy S4 Active - Removing the chassis screws 01
    1. Remove the twelve Phillips screws that attach the chassis to the display. Put the screws in a container.
      12 x 3.9 mm Phillips screws
  6. Removing the chassis

    Galaxy S4 Active - Removing the chassis 01
    Galaxy S4 Active - Removing the chassis 02
    Galaxy S4 Active - Removing the chassis 03
    Galaxy S4 Active - Removing the chassis 04
    Galaxy S4 Active - Removing the chassis 05
    Galaxy S4 Active - Removing the chassis 06
    Galaxy S4 Active - Removing the chassis 07
    1. The chassis isn’t just screwed onto the display. There are also little hooks keeping it in the display. Use the steel spatula to detach the chassis.
    2. Insert the spatula between the display and the chassis. It’s very easy to start at the power button.
    3. Move the spatula all the way around the device.
    4. Once the chassis is detached, remove it from the display.
  7. Disconnecting the connectors

    Galaxy S4 Active - Disconnecting the connectors 01
    Galaxy S4 Active - Disconnecting the connectors 02
    Galaxy S4 Active - Disconnecting the connectors 03
    Galaxy S4 Active - Disconnecting the connectors 04
    Galaxy S4 Active - Disconnecting the connectors 05
    Galaxy S4 Active - Disconnecting the connectors 06
    1. Disconnect the sub-board’s plug contact.
    2. Disconnect the antenna cable.
    3. Disconnect the connection for the display.
    4. Disconnect the brightness sensor.
    5. Disconnect the proximity sensor.
    6. Disconnect the connection for the front camera.
  8. Removing the logic board

    Galaxy S4 Active - Removing the logic board 01
    Galaxy S4 Active - Removing the logic board 02
    Galaxy S4 Active - Removing the logic board 03
    1. The logic board is hooked onto the attachments for the rear camera and the vibration motor. Carefully push the logic board toward the USB port to detach it.
    2. Carefully lift the logic board.
    3. Remove the logic board from the enclosure.
  9. The right tools for your repair

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  10. Installing the logic board

    Galaxy S4 Active - Installing the logic board 01
    Galaxy S4 Active - Installing the logic board 02
    Galaxy S4 Active - Installing the logic board 03
    1. Position the logic board in the enclosure.
    2. Make sure no plug connections get stuck under the logic board.
    3. The logic board is hooked onto the attachments for the rear camera and the vibration motor. Carefully push the logic board toward the top of the enclosure to click it into place.
  11. Connecting the connectors

    Galaxy S4 Active - Connecting the connectors 01
    Galaxy S4 Active - Connecting the connectors 02
    Galaxy S4 Active - Connecting the connectors 03
    Galaxy S4 Active - Connecting the connectors 04
    Galaxy S4 Active - Connecting the connectors 05
    Galaxy S4 Active - Connecting the connectors 06
    1. Connect the front camera to the logic board.
    2. Connect the logic board to the proximity sensor.
    3. Connect the brightness sensor.
    4. Connect the display.
    5. Connect the logic board to the antenna cable.
    6. Connect the sub-board.
  12. Installing the chassis

    Galaxy S4 Active - Installing the chassis 01
    Galaxy S4 Active - Installing the chassis 02
    Galaxy S4 Active - Installing the chassis 03
    Galaxy S4 Active - Installing the chassis 04
    Galaxy S4 Active - Installing the chassis 05
    Galaxy S4 Active - Installing the chassis 06
    Galaxy S4 Active - Installing the chassis 07
    1. The chassis isn’t just screwed onto the display. There are also little hooks keeping it in the display. Press on the chassis with your fingers to secure it on the display.
    2. Press the chassis firmly onto the entire device.
  13. Fastening the chassis screws

    Galaxy S4 Active - Fastening the chassis screws 01
    1. Attach the chassis with the twelve Phillips screws.
      12 x 3.9 mm Phillips screws
  14. Installing the four metal shields

    Galaxy S4 Active - Installing the four metal shields 01
    Galaxy S4 Active - Installing the four metal shields 02
    Galaxy S4 Active - Installing the four metal shields 03
    Galaxy S4 Active - Installing the four metal shields 04
    1. Using tweezers, put the four metal shields back on.
    2. Firmly press on each cover.
  15. Inserting the SIM and microSD cards

    Galaxy S4 Active - Inserting the SIM and microSD cards 01
    1. Insert the SIM card and the microSD card.
  16. Installing the battery

    Galaxy S4 Active - Installing the battery 01
    Galaxy S4 Active - Installing the battery 02
    Galaxy S4 Active - Installing the battery 03
    1. Put the battery in the Galaxy S4 Active.
  17. Attaching the back cover

    Galaxy S4 Active - Attaching the back cover 01
    Galaxy S4 Active - Attaching the back cover 02
    Galaxy S4 Active - Attaching the back cover 03
    Galaxy S4 Active - Attaching the back cover 04
    1. Position the back cover on the chassis.
    2. The back cover hooks onto the bottom of the chassis.
    3. Carefully press the back cover on all over so the retaining clips can click into place.
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