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Logic Board Connectors

Prerequisite Only
This guide is only intended to be used as a prerequisite for other guides. It's incomplete by itself.

Introduction

This is a prerequisite only guide. It disconnects most of the connectors and removes most of the screws to take the motherboard out. The shots are taken such that you can’t see whether the Taptic Engine is out or not.

Note that each iPhone's logic board and Touch ID fingerprint sensor are paired at the factory, so replacing the logic board will disable Touch ID unless you also install a replacement home button that has been properly paired to your new logic board.

Opening the iPhone 8 will damage the waterproof seals on the display. If you do not replace the adhesive seals, your phone will function normally, but will no longer be water-resistant.

What you need

  1. Logic Board Connectors, Disconnect the logic board: step 1, image 1 of 2 Logic Board Connectors, Disconnect the logic board: step 1, image 2 of 2

    • Use the flat end of a spudger to disconnect the camera cable connector by prying it straight up from its socket.

    Edit

  2. Logic Board Connectors: step 2, image 1 of 1
    Tool used on this step:
    Standoff Screwdriver for iPhones
    $5.49
    Buy

    • Remove the two screws securing the rear-facing camera bracket:

    • One 3.0 mm standoff screw

    • One 3.1 mm Phillips screw

    • Standoff screws are best removed using a standoff screwdriver or bit.

    • In a pinch, a small flathead screwdriver will do the job—but use extra caution to ensure it doesn't slip and damage surrounding components.

    Edit

  3. Logic Board Connectors: step 3, image 1 of 1

    • Remove the rear-facing camera bracket.

    Edit

  4. Logic Board Connectors: step 4, image 1 of 2 Logic Board Connectors: step 4, image 2 of 2

    • Use the point of a spudger to disconnect the flash connector from its socket by prying it straight up.

    Edit

  5. Logic Board Connectors: step 5, image 1 of 1

    • Remove the two screws securing the upper cable bracket:

    • One 2.9 mm Phillips screw

    • One 1.3 mm Phillips screw

    Edit

  7. Logic Board Connectors: step 6, image 1 of 1

    • Remove the upper cable bracket.

    Edit

  8. Logic Board Connectors: step 7, image 1 of 2 Logic Board Connectors: step 7, image 2 of 2

    • Use the flat end of a spudger to pry the upper cable connector up from its socket.

    Edit

  9. Logic Board Connectors, Remove the top left antenna component: step 8, image 1 of 1

    • Remove the three Phillips 1.3 mm screws securing the top left antenna component.

    Edit

  10. Logic Board Connectors: step 9, image 1 of 1

    • Remove the 1.4 mm Phillips screw securing the antenna component to the top of edge of the case.

    Edit

  11. Logic Board Connectors: step 10, image 1 of 1

    • Remove the antenna component.

    Edit

  12. Logic Board Connectors, Remove the top left grounding clip: step 11, image 1 of 1

    • Remove the two Phillips screws securing the grounding clip at the top left edge of the logic board:

    • One 1.5 mm Phillips screw

    • One 2.6 mm Phillips screw

    Edit

  13. Logic Board Connectors: step 12, image 1 of 1

    • Remove the grounding clip.

    Edit

  14. Logic Board Connectors, Unscrew the logic board: step 13, image 1 of 1

    • Remove the three screws securing the motherboard:

    • One 1.8 mm Phillips screw

    • One 2.5 mm standoff screw

    • One 2.2 mm standoff screw

    Edit

  15. Logic Board Connectors: step 14, image 1 of 2 Logic Board Connectors: step 14, image 2 of 2

    • Use tweezers to gently bend the logic board grounding bracket out of the way.

    Edit

  16. Logic Board Connectors: step 15, image 1 of 2 Logic Board Connectors: step 15, image 2 of 2

    • Use the point of a spudger to move the SIM card eject plunger out of the logic board's way.

    Edit
Conclusion

To reassemble your device, follow the above steps in reverse order.

Take your e-waste to an R2 or e-Stewards certified recycler.

Repair didn’t go as planned? Check out our Answers community for troubleshooting help.

Author

with 3 other contributors

Arthur Shi

Member since: 01/03/18

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