Introduction
The iPhone 7 Plus home “button” is actually a solid-state sensor, which also includes Touch ID (fingerprint recognition) capability.
Most replacement home buttons won’t work, so check carefully before starting your repair. Your iPhone’s original home button is uniquely paired to the logic board at the factory—and without Apple’s proprietary calibration process, even a genuine replacement home button from another iPhone won’t work. To fix a broken home button, you should install a specially-made, universal-style home button. Note that these replacements only work as a button; Touch ID will not function.
If you are only replacing a broken screen, you can use this guide to carefully remove and transfer your working original home button to a new screen, preserving all functions, including Touch ID.
During this procedure, to avoid accidentally straining or tearing the display cables, it's best to completely detach the display assembly before beginning repairs on the home/Touch ID sensor. But if you are comfortable doing so, you may skip the display assembly section of this guide and go straight to the home/Touch ID sensor section.
Tools
Parts
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Power off your iPhone before beginning disassembly.
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Remove the two 3.4 mm pentalobe screws at the bottom edge of the iPhone.
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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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Pull up on the suction cup with firm, constant pressure to create a slight gap between the front panel and rear case.
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Insert the flat end of a spudger into the gap.
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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.
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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.
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Remove the spudger from the left side of the phone and insert the flat end into the bottom right corner.
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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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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.
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Open the iPhone by swinging the display up from the left side, like the back cover of a book.
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Remove the following four tri-point Y000 screws securing the lower display cable bracket to the logic board:
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Three 1.2 mm screws
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One 2.6 mm screw
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Use the point of a spudger to lift the battery connector out of its socket on the logic board.
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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.
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Remove the three tri-point Y000 screws securing the bracket over the front panel sensor assembly connector:
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One 1.3 mm screw
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Two 1.0 mm screws
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Remove the bracket.
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Remove the four Y000 screws securing the bracket over the home/Touch ID sensor:
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One 1.1 mm screw
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Three 1.3 mm screws
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Pry under the left edge of the home button cable connector to disconnect it from its socket.
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Carefully pry up the underlying connector and move it out of the way of the home/Touch ID cable.
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If the connector doesn't pry up easily, use a hair dryer or iOpener to heat and soften the adhesive securing the connector, and then try again.
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Flip the display assembly over. Use a hairdryer or prepare an iOpener and apply it to the lower edge of the display for about 90 seconds in order to soften up the adhesive underneath.
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Use an opening pick to gently separate the adhesive holding the home/Touch ID sensor cable to the back side of the display panel.
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Remove the home/Touch ID sensor assembly by lifting it through the front side of the display.
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Compare your new replacement part to the original part—you may need to transfer remaining components or remove adhesive backings from the new part before installing.
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? Try some basic troubleshooting, or search our Answers forum for help.
15 comments
Correct, and that is also stated in the introduction. This guide is primarily for folks who need to transfer the home button onto a new/replacement display. So Jeff if I'm transferring button to a new display will I retain Touch ID functionality? Or would it be lost? My screen is cracked and I want to replace it. Thanks.
Yes, if you carefully move your original home button to your new display, it should be good as new, Touch ID and all.
Can the home button not be removed through the back? Does it only come through the front?
Talon -
You can replace the home button but your touch ID wont work anymore. Apple has it coded with your logic board. once you remove it yes, the home button will work well but you can't use the touch ID.
Rachelle -
The recommendation of discharging the battery is completely unnecessary. Even a 25% charged battery can explode. Completely ridiculous suggestion.
pargoff -
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 -
Hang on a second here, doesn’t the Ifixit part I ordered come with the seals? The display assembly? It doesn’t. Now I have to wait another week?!
Vanessa Pinter -
How do you turn off if the screen isn’t responding to touch?
adam -
The replacement battery came with the seal—but how do you put it on???
lkollar -
Instructions for replacing the seal are here: iPhone Display Adhesive Replacement
bester -
I just found the instructions on how to install the seals AFTER I was completed and had to figure it out. Maybe, just maybe you should link this somewhere on the guild instead of buried in a comment. Just a thought.
Charles Meitin -
Step 1 is: Read through all the steps and comments or the method prior to starting on this Step 1. There's a lot of much needed information and experience that you can learn from which will reduce the chance of struggling, wasting time or even breaking your device.
My favourites are:
Use a hot water bottle.
Label all screws you remove with their size and location on a piece of paper with double sided sticky tape.
Test the lightning assembly at step 13
There is a Standoff driver bit in the box, don't use a screwdriver.
etc...
Neil Eriksen -
A tip for looking out for all those little screws. I used an ice block tray, for all the little screws etc. I numbered each with the step number, as in the instructions, but not all steps have bits to look out for. Where two different size screws are used I had a tray for each size and marked step a and step b. For this I coloured each tray sticker with the colour of the screw as shown in the instructions. All this worked a treat with no confusion or using the wrong part.
Herb
Herb Adler -