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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.

  1. Before you begin, discharge your iPhone battery below 25%. A charged lithium-ion battery can catch fire and/or explode if accidentally punctured.
    • Before you begin, discharge your iPhone battery below 25%. A charged lithium-ion battery can catch fire and/or explode if accidentally punctured.

    • Power off your iPhone before beginning disassembly.

    • Remove the two 3.5 mm pentalobe screws on the bottom edge of the iPhone.

    • Opening the iPhone's display will compromise its waterproof seals. Have replacement seals ready before you proceed past this step, or take care to avoid liquid exposure if you reassemble your iPhone without replacing the seals.

  2. Heating the lower edge of the iPhone will help soften the adhesive securing the display, making it easier to open.
    • Heating the lower edge of the iPhone will help soften the adhesive securing the display, making it easier to open.

    • 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.

  3. Apply a suction cup to the lower half of the front panel, just above the home button. Be sure the suction cup does not overlap with the home button, as this will prevent a seal from forming between the suction cup and front glass.
    • Apply a suction cup to the lower half of the front panel, just above the home button.

    • Be sure the suction cup does not overlap with the home button, as this will prevent a seal from forming between the suction cup and front glass.

    • If your display is badly cracked, covering it with a layer of clear packing tape may allow the suction cup to adhere. Alternatively, very strong tape may be used instead of the suction cup. If all else fails, you can superglue the suction cup to the broken screen.

  4. Pull up on the suction cup with firm, constant pressure to create a slight gap between the front panel and rear case. Insert an opening pick into the gap. The watertight adhesive holding the display in place is very strong; creating this initial gap takes a significant amount of force. If you're having a hard time opening a gap, apply more heat, and gently rock the screen up and down to weaken the adhesive until you create enough of a gap to insert your tool.
    • Pull up on the suction cup with firm, constant pressure to create a slight gap between the front panel and rear case.

    • Insert an opening pick into the gap.

    • The watertight adhesive holding the display in place is very strong; creating this initial gap takes a significant amount of force. If you're having a hard time opening a gap, apply more heat, and gently rock the screen up and down to weaken the adhesive until you create enough of a gap to insert your tool.

    The screen on my phone was so broken, a suction cup did not work, so I softened the adhesive with a blow dryer and used a Jimmy to carefully pry open the phone from the bottom just enough to slip a pick in.

    charguy - 回复

    Just completed a smashed screen replacement, this is probably the most time consuming part. Used packing tape to cover the screen to help create a suction surface (had to replace it a couple times because it pulls away after a purple good pulls ) Used consistent heat for about 5 minutes, then stuck a pick in the tiniest opening… and pry pry pry!

    Brian Gill - 回复

  5. Slide the opening pick up the left edge of the phone starting at the lower edge and moving towards the volume control buttons and silent switch, breaking up the adhesive holding the display in place. Stop near the top left corner of the display. Do not try to pry the top edge of the display away from the rear case, as it is held in place by plastic clips that may break.
    • Slide the opening pick up the left edge of the phone starting at the lower edge and moving towards the volume control buttons and silent switch, breaking up the adhesive holding the display in place.

    • Stop near the top left corner of the display.

    • Do not try to pry the top edge of the display away from the rear case, as it is held in place by plastic clips that may break.

  6. Re-insert your tool at the lower right corner of the iPhone, and slide it around the corner and up the right side of the phone to separate the adhesive. Don't insert the pick very far, or you may damage the display cables along this side of the iPhone. Insert it only a few millimeters, or about the width of the display bezel. Don't insert the pick very far, or you may damage the display cables along this side of the iPhone. Insert it only a few millimeters, or about the width of the display bezel.
    • Re-insert your tool at the lower right corner of the iPhone, and slide it around the corner and up the right side of the phone to separate the adhesive.

    • Don't insert the pick very far, or you may damage the display cables along this side of the iPhone. Insert it only a few millimeters, or about the width of the display bezel.

  7. Gently pull up on the suction cup to lift up the bottom edge of the display. Do not raise the display more than 15º or you'll risk straining or tearing the ribbon cables connecting the display.
    • Gently pull up on the suction cup to lift up the bottom edge of the display.

    • Do not raise the display more than 15º or you'll risk straining or tearing the ribbon cables connecting the display.

    • Pull on the small nub on the suction cup to remove it from the front panel.

  8. Slide an opening pick underneath the display around the top left corner and along the top edge of the phone to loosen the last of the adhesive. Slide an opening pick underneath the display around the top left corner and along the top edge of the phone to loosen the last of the adhesive. Slide an opening pick underneath the display around the top left corner and along the top edge of the phone to loosen the last of the adhesive.
    • Slide an opening pick underneath the display around the top left corner and along the top edge of the phone to loosen the last of the adhesive.

  9. Slide the display assembly slightly down (away from the top edge of the phone) to disengage the clips holding it to the rear case. Slide the display assembly slightly down (away from the top edge of the phone) to disengage the clips holding it to the rear case.
    • Slide the display assembly slightly down (away from the top edge of the phone) to disengage the clips holding it to the rear case.

  10. Open the iPhone by swinging the display up from the left side, like the back cover of a book. Don't try to fully separate the display yet, as several fragile ribbon cables still connect it to the iPhone's logic board. Lean the display against something to keep it propped up while you're working on the phone.
    • Open the iPhone by swinging the display up from the left side, like the back cover of a book.

    • Don't try to fully separate the display yet, as several fragile ribbon cables still connect it to the iPhone's logic board.

    • Lean the display against something to keep it propped up while you're working on the phone.

    Nach RECHTS klappen - nicht nach links!

    Manfred Wachtel - 回复

    • Remove four Phillips screws securing the lower display cable bracket to the logic board, of the following lengths:

    • Two 1.3 mm screws

    • Two 2.8 mm screws

    • Throughout this guide, keep careful track of your screws so that each one goes back where it came from during reassembly. Installing a screw in the wrong place can cause permanent damage.

    • Remove the bracket.

    Not Y000 this time haha

    Easy Repair - 回复

    can same length screws mixed up?

    Brook布魯克 - 回复

    It is not ideal, but possible for these screws.

    Arthur Shi -

    using the repair kit i purchased with my screen replacement, i am currently having issues removing these screws with the PH000. please help

    Mark Ordaz - 回复

    I was too, thankfully I had another set that contained the PH00 bit, that worked great for me.

    William Mitchell -

    Ok. My screw is stuck. How do I remove it? Philips head is stripped.

    Kristina Graham - 回复

    Solved it myself. Firm pressure did the trick.

    Kristina Graham -

  11. Use the point of a spudger to pry the battery connector out of its socket in the logic board. Bend the battery connector cable slightly away from the logic board to prevent it from accidentally making contact with the socket and providing power to the phone during your repair.
    • Use the point of a spudger to pry the battery connector out of its socket in the logic board.

    • Bend the battery connector cable slightly away from the logic board to prevent it from accidentally making contact with the socket and providing power to the phone during your repair.

    Make sure you pry the battery connector off from the right hand side as shown in the picture. Theres a delicate component on the logicboard near the battery connector called a Mosfet which is linked to the battery charging software. If you knock it off accidently you’ll loose battery charging and the phone will boot loop and youll need to have it re-soldered back on.

    Gareth - 回复

  12. Use the point of a spudger to pry the lower display connector out of its socket. To re-attach press connectors like this one, press down on one side until it clicks into place, then repeat on the other side. Do not press down on the middle. If the connector is even slightly misaligned, the connector can bend, causing permanent damage.
    • Use the point of a spudger to pry the lower display connector out of its socket.

    • To re-attach press connectors like this one, press down on one side until it clicks into place, then repeat on the other side. Do not press down on the middle. If the connector is even slightly misaligned, the connector can bend, causing permanent damage.

  13. Use the point of a spudger to disconnect the second lower display cable. Use the point of a spudger to disconnect the second lower display cable.
    • Use the point of a spudger to disconnect the second lower display cable.

  14. Remove the three 1.3 mm Phillips screws securing the bracket over the front panel sensor assembly connector. Remove the bracket.
    • Remove the three 1.3 mm Phillips screws securing the bracket over the front panel sensor assembly connector.

    • Remove the bracket.

    If you are replacing the adhesive liner, the remaining release liner strips will interfere with the two outer screws. I had to cut a working section out of the liner at each location and move it aside with the spudger.

    Thomas Tritt - 回复

    This part is throwing me for a loop. Having difficulty finding the read head for these screws. Is it the same size as the two small 1.3mm screws in step 12?

    Jared Hensley - 回复

    ended up getting it with the PH000, I must of just been rushing it.

    Jared Hensley - 回复

  15. Use the point of a spudger to disconnect the  front panel sensor assembly connector. Use the point of a spudger to disconnect the  front panel sensor assembly connector.
    • Use the point of a spudger to disconnect the front panel sensor assembly connector.

  16. Remove the display assembly.

    Hi ifixit, if you find my method dangerous, please remove it.

    After Step 17, I skipped Step 18 to Step 28.

    At Step 29, I lifted up the four adhesive black pull-tabs to expose the white adhesive side. Next, I use hot air gun and blow on the back cover of the iphone for about a minute (maybe a hairdryer will work too) .

    Warning: Don't overheat the iPhone, or you may accidentally ignite the battery.

    I think the temperature was around 60 DegC.

    Extreme Caution: Do Not overheat. I use my hand to gauge the hotness. Careful not to burn yourself or the board.

    I was able to pull out all the white adhesive tapes easily as the adhesive soften.

    DO NOT TRY this method if you are a novice or inexperience! I am not responsible if you hurt yourself or damage your iphone!

    John - 回复

    Hey John! I’m glad the repair worked out for you!

    From our research, applying heat does soften the adhesive strips, but it also causes them to lose structural integrity and break more easily. That’s why we normally suggest using heat after the strips are already broken. Removing the Taptic Engine definitely takes a few extra steps, but we feel that it gives fixers the best chance of pulling out the adhesive strips intact.

    Arthur Shi -

  17. Insert a SIM card eject tool, bit, or a straightened paperclip into the small hole in the SIM card tray. Press to eject the tray.
    • Insert a SIM card eject tool, bit, or a straightened paperclip into the small hole in the SIM card tray.

    • Press to eject the tray.

    • This may require a significant amount of force. However, ensure the eject tool is properly aligned beforehand as to not damage the eject mechanism inside the phone.

  18. Remove the SIM card tray from the iPhone. The SIM card will fall out of the tray easily.
    • Remove the SIM card tray from the iPhone.

    • The SIM card will fall out of the tray easily.

    • When reinserting the SIM card, ensure that it is in the proper orientation relative to the tray.

    • A thin rubber gasket around the SIM card tray provides water and dust protection. If this gasket is damaged or missing, replace the gasket or the entire SIM card tray to protect your iPhone's internal components.

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

  20. Remove the two screws securing the rear-facing camera bracket:
    • 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 an [关联产品丢失或禁用: IF145-343-1] and driver handle.

    • 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.

    The screw and standoff are the other way round in this step. The photo shows the small screw removed and the standoff securing the logicboard is circled incorrectly. Also you may find that the standoff screw is not magnetic, making it a little tricky to replace!

    Michael Millington - 回复

    Hi Michael,

    You are correct; thanks for catching that! The original image was correct, and for some reason the image was updated, and no longer correct. I have reverted it back to the original image.

    Arthur Shi -

    wrong Screws in Picture

    mmiller - 回复

  21. Remove the rear-facing camera bracket.
    • Remove the rear-facing camera bracket.

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

    The small connector is not actually for the flash, the flash and mic module are just below that and connect to the same cable as the power button.

    Bonrad C - 回复

  23. Remove the two screws securing the upper cable bracket:
    • Remove the two screws securing the upper cable bracket:

    • One 2.9 mm Phillips screw

    • One 1.3 mm Phillips screw

  24. Remove the upper cable bracket.
    • Remove the upper cable bracket.

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

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

    1,2mm ! not 1,3mm ! thx

    Boni Zei - 回复

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

  28. Remove the antenna component.
    • Remove the antenna component.

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

  30. Remove the grounding clip.
    • Remove the grounding clip.

    what happen if don't put this part?

    albert saens - 回复

    Hi Albert,

    It’s hard to tell. Most phone functions will probably work, but you may start getting quirky problems.

    Arthur Shi -

    If it comes out it must go back in *no spare parts *

    Josh Brito - 回复

  31. Remove the three screws securing the motherboard:
    • 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

    The One 1.8 mm Phillips screw was buried under some gasket material. It took some twezzer work to get that material off.

    A.J. Roest - 回复

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

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

  34. Use the point of a spudger to pry up and disconnect the Wi-Fi diversity antenna cable. Use the point of a spudger to pry up and disconnect the Wi-Fi diversity antenna cable.
    • Use the point of a spudger to pry up and disconnect the Wi-Fi diversity antenna cable.

  35. Use the point of a spudger to pry up and disconnect the Lightning cable connector. Use the point of a spudger to pry up and disconnect the Lightning cable connector.
    • Use the point of a spudger to pry up and disconnect the Lightning cable connector.

  36. Use the point of a spudger to pry up and disconnect the wireless charging coil connector.
    • Use the point of a spudger to pry up and disconnect the wireless charging coil connector.

  37. Use the flat end of a spudger to gently lift the battery connector end of the logic board up. Be careful not to pull against any cables. If you feel resistance, check that all cables, connectors, and components are clear of the board.
    • Use the flat end of a spudger to gently lift the battery connector end of the logic board up.

    • Be careful not to pull against any cables. If you feel resistance, check that all cables, connectors, and components are clear of the board.

  38. Grasping it by the edges, lift the logic board near the battery connector and remove it. Be careful not to snag the logic board on any cables. Be careful not to snag the logic board on any cables.
    • Grasping it by the edges, lift the logic board near the battery connector and remove it.

    • Be careful not to snag the logic board on any cables.

结论

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.

41等其他人完成本指南。

Arthur Shi

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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.

Sebastian Bojek - 回复

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.

Arthur Shi -

can i use this process two switch a logic board from a working i phone to one that is icloud locked?

Kenneth Zapata - 回复

That’s why I’m here

Kol Rukaj -

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.

Arthur Shi -

It may work but the card to be replaced needs to be unlocked with iCloud.

Yuri Henrique -

i have an iphone 8 plus icloud locked ,is it possible that if i change the motherboard with a new one so moblie will again start and work as before .please brief me about this…

Malik Mohammad Hussain - 回复

Hi Malik,

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.

Arthur Shi -

o novo também precisa ser desbloqueado para que tudo funcione

Yuri Henrique -

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