Removing the logic board

You need to clean the logic board.

  • iPhone 8
  • 24 Steps
  • Medium
  • 60 min.
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Introduction

In this guide, we show you how to remove the logic board of your iPhone 8 on your own. You need to remove the logic board if you want to clean it after water damage, for example.

Required tools

  • Hard Plastic Pick

    Hard Plastic Pick

    You need a flat but stable tool such as a 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
  • Phillips screwdriver with centering pin

    Phillips screwdriver with centering pin

    Phillips screwdriver with practical centering pin for logic board screws.

    €6.00 at the iDoc store
  • Plastic prying tool

    Plastic prying tool

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

    €2.00 at the iDoc store
  • Suction cup

    Suction cup

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

    €3.00 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
View product(s) at the iDoc store

Replacement parts and tools for this repair

With our tools and the right replacement part, your repair will be a success.

Y-Type Toolkit

No matter what the problem is, our Y-Type tool kit can help you fix it. This repair kit includes an opening tool; Wiha...

for €34.00

Getting started

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

24 steps
  1. Switching off your device

    iPhone 8 - Switching off your device 01
    iPhone 8 - Switching off your device 02
    1. Turn your iPhone off completely to avoid damaging it during the repair. Press the Sleep/Wake button for about three seconds until the slider labeled “power off” appears.
    2. Swipe it from left to right. Now your iPhone will shut down completely, which can take about ten seconds.
  2. Removing the enclosure screws

    iPhone 8 - Removing the enclosure screws 01
    • 2 × 3.4mm Pentalobe

    You need a pentalobe screwdriver (PL1) to open the iPhone 7.

    1. Remove the two pentalobe screws at the bottom of the enclosure. They’re to the right and left of the Lightning connector. Put the screws in the same section of your magnetic pad.
  3. Lifting the display

    iPhone 8 - Lifting the display 01
    iPhone 8 - Lifting the display 02
    iPhone 8 - Lifting the display 03
    iPhone 8 - Lifting the display 04
    1. Put your iPhone 8 on a soft, clean surface to avoid scratching the back.
    2. To lift the front panel, you need a suction cup, a hard plastic pick and a heat gun. If the screen is severely cracked, cover all of it with packing tape before you continue.
    3. The screen is glued to the frame. Use a heat gun to heat the outer edges of the display to about 60°C (140°F).
    4. Place the suction cup over the Home button (if possible) or next to it. While lifting the screen with the suction cup, insert the hard plastic pick between the aluminum frame and the display frame and press down the aluminum frame. Because the display’s glued on, you have to slide the pick all around the iPhone between the aluminum frame and the display frame. Don’t stick the pick in too far on the side where the Sleep/Wake button is because that could damage the flexible flat display cables.
    5. Now use the pick to push the display so the tabs come out of the aluminum frame. Then you can fold the display over to the side.
    6. Set the display on the aluminum frame so you don’t stretch the flexible flat cables too much.

    If necessary, heat the outer edges of the display a few times. Don’t forget that the flexible flat cables for the display are on the side with the Sleep/Wake button. The display is also hooked onto the edge of the earpiece.

  4. Disconnecting the battery contact

    iPhone 8 - Disconnecting the battery contact 01
    iPhone 8 - Disconnecting the battery contact 02
    iPhone 8 - Disconnecting the battery contact 03
    • 2 × 2.6 mm Phillips
    • 2 × 1.0 mm Phillips

    Before starting the repair, disconnect the battery contact to prevent short circuits and avoid accidentally turning on your device during the repair.

    1. Use a phillips screwdriver (Ph00) to remove the four phillips screws. Then take off the cover. Put all the parts in the same section of your magnetic pad.
    2. Now carefully lift off the battery contact by inserting a plastic spudger slightly below the connector.
  5. Disconnecting the display connectors

    iPhone 8 - Disconnecting the display connectors 01
    iPhone 8 - Disconnecting the display connectors 02
    iPhone 8 - Disconnecting the display connectors 03
    • Connector

    Use the spudger to disconnect the connectors for the display and Home button.

  6. Disconnecting the FaceTime connector

    iPhone 8 - Disconnecting the FaceTime connector 01
    iPhone 8 - Disconnecting the FaceTime connector 02
    iPhone 8 - Disconnecting the FaceTime connector 03
    • 3 × 1.0 mm Phillips
    1. Use a Phillips screwdriver (PH00) to remove the three Phillips screws. Then take off the cover. Put all the parts in the same section of your magnetic pad.
    2. Using a spudger, carefully disconnect the FaceTime connector from the PCB.
    3. Now you can take off the display all the way.
  7. Removing the iSight camera

    iPhone 8 - Removing the iSight camera 01
    iPhone 8 - Removing the iSight camera 02
    iPhone 8 - Removing the iSight camera 03
    iPhone 8 - Removing the iSight camera 04
    iPhone 8 - Removing the iSight camera 05
    • 1 × 2.9 mm Phillips
    • 1 × 3.0 mm Standoff
    • Connector
    1. Remove the screws which fasten the bracket plate for the iSight camera and remove the bracket plate.
    2. Disconnect the camera by carefully prying off its connector using a spudger.
    3. There are special screwdrivers for removing the internal thread screw, but you can also use a regular, thin slotted screwdriver.

    4. Remove the camera.
  8. Disconnecting the standby/volume connector

    iPhone 8 - Disconnecting the standby/volume connector 01
    iPhone 8 - Disconnecting the standby/volume connector 02
    iPhone 8 - Disconnecting the standby/volume connector 03
    iPhone 8 - Disconnecting the standby/volume connector 04
    • 1 × 1.1 mm Phillips
    • 1 × 2.7 mm Phillips
    1. First remove the screws of the bracket plate. Place all screws in the same box on the magnetic mat.
    2. Remove the bracket plate.
    3. Disconnect the connector from the logic board.
  9. Removing the plastic bracket

    iPhone 8 - Removing the plastic bracket 01
    iPhone 8 - Removing the plastic bracket 02
    iPhone 8 - Removing the plastic bracket 03
    iPhone 8 - Removing the plastic bracket 04
    iPhone 8 - Removing the plastic bracket 05
    • 2 × 1.2 mm Philliips
    • 2 × 1.0 mm Philliips
    • 1 × 2.5 mm Phillips
    • 1 × 1.4 mm Phillips
    1. First remove the screws from the plastic bracket. Put the screws in the same box on your magnetic pad.
    2. One of the screws goes into the back cover sideways.

    3. Then remove the bracket.
    4. There are more screws under the bracket, which hold a connection piece in place. Remove these screws.
    5. Now remove the connection piece.
  10. Removing the Wi-Fi antenna

    iPhone 8 - Removing the Wi-Fi antenna 01
    iPhone 8 - Removing the Wi-Fi antenna 02
    iPhone 8 - Removing the Wi-Fi antenna 03
    iPhone 8 - Removing the Wi-Fi antenna 04
    iPhone 8 - Removing the Wi-Fi antenna 05
    • 1 × 1.3 mm Phillips
    • 1 × 1.2 mm Phillips
    • Connector
    1. First remove the Phillips screws fastening the antenna.
    2. Then disconnect the connector from the board.
    3. The antenna is lightly glued in place. Use a little hot air to detach the antenna or carefully disconnect it by inserting a spatula under the cable.
    4. Then take out the antenna.
  11. Removing the SIM card tray

    iPhone 8 - Removing the SIM card tray 01
    iPhone 8 - Removing the SIM card tray 02
    1. You can use the SIM tool or a paperclip to remove the SIM card tray. Press the SIM tool into the small hole in the SIM card tray to remove it.
  12. Removing the logic board

    iPhone 8 - Removing the logic board 01
    iPhone 8 - Removing the logic board 02
    iPhone 8 - Removing the logic board 03
    iPhone 8 - Removing the logic board 04
    iPhone 8 - Removing the logic board 05
    iPhone 8 - Removing the logic board 06
    • 1 × 2.4 mm Standoff
    • 1 × 2.1 mm Standoff
    • 1 × 1.6 mm Phillips
    1. Unscrew all screws that hold the logic board in place. You can unscrew the standoff screws using a special screwdriver or a regular, thin slotted screwdriver.
    2. The Phillips screw is covered by a sticker, see photo.

    3. Now you can carefully remove the logic board by hand. Next to the two holes for the iSight camera, there is a plastic holder for a screw.. This plastic holder is placed on top of the logic board.
  13. Inserting the logic board

    iPhone 8 - Inserting the logic board 01
    iPhone 8 - Inserting the logic board 02
    iPhone 8 - Inserting the logic board 03
    iPhone 8 - Inserting the logic board 04
    • 1 × 2.4 mm Standoff
    • 1 × 2.1 mm Standoff
    • 1 × 1.6 mm Phillips
    1. Reinsert the logic board in its original position. The camera holder should be on top of the logic board. (Over the screw hole on the top right in the image.)
    2. Fasten the logic board using the screws.
  14. Inserting the SIM card tray

    iPhone 8 - Inserting the SIM card tray 01
    iPhone 8 - Inserting the SIM card tray 02
    1. Now insert the SIM card tray into it slot.

    If you’re having trouble sliding it in, check the position of the logic board.

  15. Installing the Wi-Fi antenna

    iPhone 8 - Installing the Wi-Fi antenna 01
    iPhone 8 - Installing the Wi-Fi antenna 02
    iPhone 8 - Installing the Wi-Fi antenna 03
    • 1 × 1.3 mm Phillips
    • 1 × 1.2 mm Phillips
    1. Put the Wi-Fi antenna back where it was originally.
    2. Now screw in its bracket plate.
    3. Then gently press it on so the glue will stick.
    4. Now connect the connector.
  16. Installing the plastic bracket

    iPhone 8 - Installing the plastic bracket 01
    iPhone 8 - Installing the plastic bracket 02
    iPhone 8 - Installing the plastic bracket 03
    iPhone 8 - Installing the plastic bracket 04
    iPhone 8 - Installing the plastic bracket 05
    • 1 × 2.5 mm Phillips
    • 1 × 1.4 mm Phillips
    • 2 × 1.2 mm Phillips
    • 2 × 1.0 mm Phillips
    1. Put the connection piece back into its position and fasten it with the Phillips screws.
    2. Now you can reinstall the plastic bracket and fasten it with the screws.
  17. Connecting the standby/volume cable

    iPhone 8 - Connecting the standby/volume cable 01
    iPhone 8 - Connecting the standby/volume cable 02
    iPhone 8 - Connecting the standby/volume cable 03
    iPhone 8 - Connecting the standby/volume cable 04
    • 1 × 1.1 mm Phillips
    • 1 × 2.7 mm Phillips
    1. Connect the standby/volume control cable again.
    2. Put the bracket plate back on the connector and fasten it with the screws.
  18. Installing the iSight camera

    iPhone 8 - Installing the iSight camera 01
    iPhone 8 - Installing the iSight camera 02
    iPhone 8 - Installing the iSight camera 03
    iPhone 8 - Installing the iSight camera 04
    iPhone 8 - Installing the iSight camera 05
    • Connector
    • 1 × 2.9 mm Phillips
    • 1 × 3.0 mm Standoff
    1. Reinsert the camera into its holder and press into place.
    2. Connect the camera's connector.
    3. Place the bracket plate over the camera and screw it in.
  19. Frame sticker

    iPhone 8 - Frame sticker 01
    iPhone 8 - Frame sticker 02
    iPhone 8 - Frame sticker 03
    iPhone 8 - Frame sticker 04
    iPhone 8 - Frame sticker 05
    1. To make sure that the new frame sticker will really stick, remove all residue of the old glue and dirt.
    2. Remove the first backing film.
    3. Position it carefully on one side and press it on gently.
    4. Remove the second piece of film.

    Please note the correct orientation of the frame sticker. The corners of the sticker differ and will help you.Even if you use a new frame sticker, your iPhones' water resistance may not be 100% what it was before!

  20. Connecting the FaceTime contact

    iPhone 8 - Connecting the FaceTime contact 01
    iPhone 8 - Connecting the FaceTime contact 02
    iPhone 8 - Connecting the FaceTime contact 03
    iPhone 8 - Connecting the FaceTime contact 04
    • 3 × 1,0 mm Phillips-Schraube
    1. Hold the display upright on the frame and connect the FaceTime contact to the logic board.
    2. Set the display on the side of the frame.
    3. Put the FaceTime contact’s cover back in the iPhone and secure it with the three Phillips screws.
  21. Connecting the display

    iPhone 8 - Connecting the display 01
    iPhone 8 - Connecting the display 02
    iPhone 8 - Connecting the display 03
    • Connector
    1. Connect the two connectors from the Home button and display to the logic board.
  22. Connecting the battery contact

    iPhone 8 - Connecting the battery contact 01
    iPhone 8 - Connecting the battery contact 02
    iPhone 8 - Connecting the battery contact 03
    iPhone 8 - Connecting the battery contact 04
    • 2 × 2.6 mm Phillips
    • 2 × 1,0 mm Phillips-Schraube
    1. Reconnect the battery by connecting the battery contact.
    2. Put the cover back in the iPhone and secure it with the four screws.
  23. Attaching the display

    iPhone 8 - Attaching the display 01
    iPhone 8 - Attaching the display 02
    iPhone 8 - Attaching the display 03
    1. Put the display on the side of the frame and lower it onto the iPhone.
    2. Then press the entire display into the frame.
  24. Fastening the enclosure screws

    iPhone 8 - Fastening the enclosure screws 01
    • 2 × 3.4 mm Pentalobe
    1. Screw the two pentalobe screws to the left and right of the Lightning connector into the enclosure.

You did it!

Great, good job! Congratulations on repairing your iPhone 8. Now we’d like to know if our guide helped you.

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