Introduction

Use this guide to remove or replace a faulty logic board in your iPhone 7 Plus.

It's important to 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 7 Plus 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.

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.

  • Opening the iPhone's display will compromise its waterproof seals. Take extra care not to expose your iPhone to liquid damage after completing your repair.

  • Remove the two 3.4 mm pentalobe screws at the bottom edge of the iPhone.

The recommendation of discharging the battery is completely unnecessary. Even a 25% charged battery can explode. Completely ridiculous suggestion.

pargoff - Reply

The risk of thermal runaway on these batteries decreases with the battery's SOC (state of charge). Below 50% charge the risk is fairly low, and at 25% charge the risk of a thermal event is near zero. If I recall correctly, the same suggestion appears in Apple's official (non-public) service manuals for the iPhone.

Jeff Suovanen -

@jeffsu Yes, that is correct. Apple does require all certified staff to discharge the battery below 25%. This is an industry standard for all LiION batteries. If you don’t want to do this, just make sure to not puncture the battery and disconnect it first thing.

Ben Meinhart - Reply

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 iPhone for about a minute 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. 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.

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Pull up on the suction cup with firm, constant pressure to create a slight gap between the front panel and rear case. Insert the flat end of a spudger 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, rock the screen up and down to weaken the adhesive until you can fit a spudger inside.
  • Pull up on the suction cup with firm, constant pressure to create a slight gap between the front panel and rear case.

  • Insert the flat end of a spudger 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, rock the screen up and down to weaken the adhesive until you can fit a spudger inside.

  • While pulling up on the suction cup, twist the spudger to widen the opening between the screen and rear case.

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Insert the flat end of the spudger between the front panel and the rear case at the lower left edge of the iPhone. Slide the spudger 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. 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.
  • Insert the flat end of the spudger between the front panel and the rear case at the lower left edge of the iPhone.

  • Slide the spudger 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.

  • 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.

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Remove the spudger from the left side of the phone and insert the flat end into the bottom right corner. Slide the spudger up the right edge of the phone to the top corner, breaking up the adhesive holding the display in place.
  • Remove the spudger from the left side of the phone and insert the flat end into the bottom right corner.

  • Slide the spudger up the right edge of the phone to the top corner, breaking up the adhesive holding the display in place.

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Pull up on the suction cup to lift up the display and open the iPhone. Do not raise the display more than 10º as there are delicate ribbon cables along the right edge of the device connecting the display to the logic board.
  • Pull up on the suction cup to lift up the display and open the iPhone.

    • Do not raise the display more than 10º as there are delicate ribbon cables along the right edge of the device connecting the display to the logic board.

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

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Slide an opening pick underneath the display along the top edge of the phone to loosen the last of the adhesive. Slide an opening pick underneath the display along the top edge of the phone to loosen the last of the adhesive.
  • Slide an opening pick underneath the display along the top edge of the phone to loosen the last of the adhesive.

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Pull the display assembly slightly away from the top edge of the phone to disengage the clips holding it to the rear case. 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.
  • Pull the display assembly slightly away from the top edge of the phone to disengage the clips holding it to the rear case.

  • 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.

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Remove the following four tri-point Y000 screws securing the lower display cable bracket to the logic board:
  • Remove the following four tri-point Y000 screws securing the lower display cable bracket to the logic board:

    • Three 1.2 mm screws

    • One 2.6 mm screw

Is it really safe to lay the device fully open like a book? The cable leading to the LCD gets stretched across the sharp edge of the aluminum edge of the back cover.

u204863 - Reply

Generally I'd say no, it's not safe. In reality I've seen a bit of variance in the cable length, and sometimes it'll be fine—but mostly I'd be prepared to prop the display up or hold it in place at a slight angle so it doesn't put too much stress on the cables. On prior iPhones it was easy to rubberband the display to a box or a can of soda, and something like that would probably work well here too. Use your own judgment.

Jeff Suovanen -

The tri wing screws are so hard to remove. What's the trick?

shannon caldwell - Reply

Remove the lower display cable bracket. Remove the lower display cable bracket.
  • Remove the lower display cable bracket.

I am confused, please help. LOL the bracket, the very first one being removed. I see it has three screws the same size and one a different size? I've been trying to fix my daughter's phone and ordered a 0.6 mm Tri Wing screwdriver for iPhone 7 plus /Apple watch. It seems to fit the screws and it seems to be turning them although I can't see that well but they're not coming out. However when I used it on a smaller bracket with two screws they came right out so I'm thinking I don't have the right screwdriver I am at my Wit's End!! I have been working on this phone or attempting to for a while now. I cannot find a list anywhere of the exact size screwdrivers needed to Take apart an iPhone 7 plus. Any help would be greatly appreciated.

chris west - Reply

If your tri-wing screwdriver worked for other tri-point screws in the phone, then it should work for the screws you are struggling with! If it feels like the screws are spinning but not coming out, try to use tweezers to pull them out. I often struggle with tri-point screws, and need to apply some downward pressure to remove them. This can be risky though, as you do not want to strip the screw or damage components underneath the bracket. If you continue to struggle, you can give this driver and this bit a try.

Scott Havard - Reply

Use the point of a spudger to lift the battery connector out of its socket on the logic board. Bend the connector cable up slightly to prevent it from making contact with the socket and providing power to  the phone. Bend the connector cable up slightly to prevent it from making contact with the socket and providing power to  the phone.
  • Use the point of a spudger to lift the battery connector out of its socket on the logic board.

  • Bend the connector cable up slightly to prevent it from making contact with the socket and providing power to the phone.

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Use the flat end of a spudger or a fingernail to disconnect the two lower display connectors by prying them straight up from their sockets on the logic board. To re-attach press connectors, press down on one end until it clicks into place, then repeat on the other end. Do not press down on the middle. If the connector is even slightly misaligned, the connector can bend, causing permanent damage. To re-attach press connectors, press down on one end until it clicks into place, then repeat on the other end. Do not press down on the middle. If the connector is even slightly misaligned, the connector can bend, causing permanent damage.
  • Use the flat end of a spudger or a fingernail to disconnect the two lower display connectors by prying them straight up from their sockets on the logic board.

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

The note about the danger of pressing on the connector incorrectly is very legitimate. Though I find it more practical to use a wide (1.5 cm) case opener tool to press it down all at once. Minimizes risk of bending the connector.

Talon - Reply

Remove the three tri-point Y000 screws securing the bracket over the front panel sensor assembly connector: One 1.3 mm screw Two 1.0 mm screws
  • Remove the three tri-point Y000 screws securing the bracket over the front panel sensor assembly connector:

    • One 1.3 mm screw

    • Two 1.0 mm screws

  • Remove the bracket.

Posted a comment above on the first step. The screwdriver that I ordered Works taking out these two screens shown in the picture. However it does not work on the first bracket that needs to be removed. It seems that all screw sizes are somewhat different but I'm not finding a list showing different screwdriver sizes needed. Does this make sense? Could anybody please give me some advice on this thank you much.

chris west - Reply

Disconnect the front panel sensor assembly connector from its socket on the logic board. This press connector should also be reconnected one end at a time to minimize the risk of bending.
  • Disconnect the front panel sensor assembly connector from its socket on the logic board.

  • This press connector should also be reconnected one end at a time to minimize the risk of bending.

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Remove the display assembly.

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Remove three Phillips screws securing the antenna component:
  • Remove three Phillips screws securing the antenna component:

    • Two 1.3 mm screws

    • One 1.2 mm screw

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Remove the 1.3 mm Phillips screw securing the antenna component to the top edge of the rear case.
  • Remove the 1.3 mm Phillips screw securing the antenna component to the top edge of the rear case.

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The screw boss at the top of the antenna component is tucked into a small recess in the top edge of the iPhone. Tilt the antenna component up towards the top of the phone. Slide the screw boss down and out of its recess.
  • The screw boss at the top of the antenna component is tucked into a small recess in the top edge of the iPhone.

  • Tilt the antenna component up towards the top of the phone.

  • Slide the screw boss down and out of its recess.

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Remove the top left antenna component.
  • Remove the top left antenna component.

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Insert a SIM card eject tool or a paperclip into the small hole in the SIM card tray. Press firmly to eject the tray.
  • Insert a SIM card eject tool or a paperclip into the small hole in the SIM card tray.

  • Press firmly to eject the tray.

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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.
  • 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 tray provides water and dust protection. If this gasket is damaged or missing, replace the gasket to protect your iPhone's internal components.

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Use an iFixit opening tool or a fingernail to disconnect the dual camera cable connectors by prying them straight up from their sockets. Use an iFixit opening tool or a fingernail to disconnect the dual camera cable connectors by prying them straight up from their sockets. Use an iFixit opening tool or a fingernail to disconnect the dual camera cable connectors by prying them straight up from their sockets.
  • Use an iFixit opening tool or a fingernail to disconnect the dual camera cable connectors by prying them straight up from their sockets.

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

    • One 1.6 mm Phillips screw

    • One 2.2 mm standoff screw

      • Standoff screws are best removed using an iPhone Standoff Screwdriver Bit 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.

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

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Remove the two 1.3 mm Phillips screws securing the upper cable bracket.
  • Remove the two 1.3 mm Phillips screws securing the upper cable bracket.

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

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Remove the two 1.3 mm Phillips screws securing the grounding clip at the top left edge of the logic board.
  • Remove the two 1.3 mm Phillips screws securing the grounding clip at the top left edge of the logic board.

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Remove the grounding clip.
  • Remove the grounding clip.

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Remove the 1.3 mm Phillips screw securing the antenna flex cable to the top edge of the iPhone's rear case.
  • Remove the 1.3 mm Phillips screw securing the antenna flex cable to the top edge of the iPhone's rear case.

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Use the sharp end of an iFixit opening tool to pry up and disconnect the antenna flex cable connector from the logic board. Use the sharp end of an iFixit opening tool to pry up and disconnect the antenna flex cable connector from the logic board.
  • Use the sharp end of an iFixit opening tool to pry up and disconnect the antenna flex cable connector from the logic board.

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Slide the flat edge of a spudger underneath the antenna flex cable to separate the adhesive holding it in place. Slide the flat edge of a spudger underneath the antenna flex cable to separate the adhesive holding it in place.
  • Slide the flat edge of a spudger underneath the antenna flex cable to separate the adhesive holding it in place.

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The screw boss at the top of the antenna flex cable is tucked into a small recess in the top edge of the iPhone. Tilt the antenna flex cable  up toward the top of the iPhone. Slide the screw boss down and out of its recess.
  • The screw boss at the top of the antenna flex cable is tucked into a small recess in the top edge of the iPhone.

  • Tilt the antenna flex cable up toward the top of the iPhone.

  • Slide the screw boss down and out of its recess.

  • Remove the antenna flex cable.

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Use a thin pry tool or tweezers to carefully pry up and disconnect the two coaxial cable connectors from the logic board. During reassembly, these can be tricky to reconnect. One at a time, hold each connector in place over its socket and press down with the flat of your spudger. The connector should snap into place. During reassembly, these can be tricky to reconnect. One at a time, hold each connector in place over its socket and press down with the flat of your spudger. The connector should snap into place.
  • Use a thin pry tool or tweezers to carefully pry up and disconnect the two coaxial cable connectors from the logic board.

    • During reassembly, these can be tricky to reconnect. One at a time, hold each connector in place over its socket and press down with the flat of your spudger. The connector should snap into place.

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Disconnect the two remaining ribbon cables from the logic board: Disconnect the upper cable connector by prying from the top Disconnect the Lightning port connector by prying along the outer edge
  • Disconnect the two remaining ribbon cables from the logic board:

    • Disconnect the upper cable connector by prying from the top

    • Disconnect the Lightning port connector by prying along the outer edge

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  • Remove the seven screws securing the logic board:

    • One 1.3 mm Phillips screw

    • Two 2.1 mm standoff screws

    • Two 2.0 mm standoff screws

    • Two 2.2 mm standoff screws

  • If you don't have a standoff bit, you can use a small flathead driver to remove standoff screws.

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

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Use the point of a spudger to carefully de-route the two coaxial cables  from the small metal clip holding them to the logic board.
  • Use the point of a spudger to carefully de-route the two coaxial cables from the small metal clip holding them to the logic board.

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Lift the logic board from the bottom edges and slide it toward the bottom of the iPhone to remove it. Be careful not to snag the logic board on any cables. During reassembly, note the position of the black grounding clip at the top right edge of the logic board, near the rear cameras. The logic board should slide underneath the clip.
  • Lift the logic board from the bottom edges and slide it toward the bottom of the iPhone to remove it.

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

  • During reassembly, note the position of the black grounding clip at the top right edge of the logic board, near the rear cameras. The logic board should slide underneath the clip.

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Conclusion

To reassemble your device, follow these instructions in reverse order.

Jeff Suovanen

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