Introduction
Follow this guide to remove and replace the logic board for the iPhone 8.
Note: 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.
What you need
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Remove the two 3.5 mm pentalobe screws on the bottom edge of the iPhone.
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Measure 3 mm from the tip and mark the opening pick with a permanent marker.
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Tool used on this step:Clampy - Anti-Clamp$24.95
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Pull the blue handle backwards to unlock the Anti-Clamp's arms.
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Slide the arms over either the left or right edge of your iPhone.
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Position the suction cups near the bottom edge of the iPhone just above the home button—one on the front, and one on the back.
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Squeeze the cups together to apply suction to the desired area.
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Heat an iOpener and thread it through the arms of the Anti-Clamp.
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Fold the iOpener so it lays on the bottom edge of the iPhone.
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Wait one minute to give the adhesive a chance to release and present an opening gap.
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Insert an opening pick into the gap.
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Skip the next three steps.
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Heating the lower edge of the iPhone will help soften the adhesive securing the display, making it easier to open.
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Use a hairdryer or prepare an iOpener and apply it to the lower edge of the phone for about 90 seconds in order to soften up the adhesive underneath.
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Apply a suction cup to the lower half of the front panel, just above the home button.
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Tool used on this step:Magnetic Project Mat$19.95
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Remove four Phillips screws securing the lower display cable bracket to the logic board, of the following lengths:
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Two 1.3 mm screws
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Two 2.8 mm screws
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Remove the bracket.
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Use the point of a spudger to pry the lower display connector out of its socket.
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Insert a SIM card eject tool, bit, or a straightened paperclip into the small hole in the SIM card tray.
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Press to eject the tray.
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Use the flat end of a spudger to disconnect the camera cable connector by prying it straight up from its socket.
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Remove the three Phillips 1.3 mm screws securing the top left antenna component.
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Remove the two Phillips screws securing the grounding clip at the top left edge of the logic board:
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One 1.5 mm Phillips screw
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One 2.6 mm Phillips screw
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Remove the three screws securing the motherboard:
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One 1.8 mm Phillips screw
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One 2.5 mm standoff screw
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One 2.2 mm standoff screw
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Use the point of a spudger to pry up and disconnect the Wi-Fi diversity antenna cable.
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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.
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.
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20 Comments
Hello evryone. Do I need a new touch ID that fits the motherboard or can I use my old touch ID?
The motherboards that are for sale, sell with touch ID and without. That`s why I am asking.
Hi Sebastian,
Yes, the Touch ID is paired with the motherboard. In order to keep Touch ID functionality, you have to use the fingerprint sensor that comes with the replacement.
can i use this process two switch a logic board from a working i phone to one that is icloud locked?
That’s why I’m here
Hi Kenneth,
The phone’s “identity” is based off of the logic board, so switching a logic board will remove the iCloud lock—if the replacement logic board is not locked. Note that the Touch ID hardware is paired each logic board.
