Apple iPhone 12 Manual

iPhone 12

Repair Manual

© 2022 Apple Inc. All rights reserved.

iPhone 12

Contents

3

Basics

Introduction

6

7

9

10

Safety

Internal View

Orderable Parts

Screws

Tools

20

21

22

52

60

64

82

15

18

Battery Safety

Broken Glass

Procedures

First Steps

SIM Tray

Display

Camera

Speaker

Battery

Taptic Engine


Contents

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iPhone 12

Introduction

Introduction

This manual includes technical instructions for replacing genuine Apple parts in iPhone and is intended for individual technicians with the knowledge, experience, and tools required to repair electronic devices.

Important

• Read the entire manual first. If you’re not comfortable performing the repairs as instructed in this manual, don’t proceed.

• Always use the latest version of this document available at support.apple.com/manuals/ repair+manual .

Warning

• Failure to follow the repair instructions or to use genuine Apple parts or proper tools may cause fire or other safety issues and lead to personal injury or death.

• iPhone 7 and later are classified as Class 1 Laser products per IEC 60825-1 Ed. 3.

These devices comply with 21 CFR 1040.10 and 1040.11, except for conformance with

IEC 60825-1 Ed. 3., as described in Laser Notice No. 56, dated May 8, 2019. These devices contain one or more lasers. Use other than as described in the user guide, repair, or disassembly may cause damage, which could result in hazardous exposure to infrared laser emissions that are not visible.

Caution

Failure to follow the repair instructions or to use genuine Apple parts or proper tools may damage the iPhone, parts, or other property, or compromise the device’s functionality or water resistance.

Warranty information

Damage caused by repairs performed outside of Apple or the Apple Authorized Service network is not covered by Apple’s warranty or AppleCare plans. Such damage may cause future repairs to be subject to out-of-warranty costs or render the device ineligible for future repairs by Apple or Apple Authorized

Service Providers.

© 2022 Apple Inc. All rights reserved. 073-00291-A | 3

iPhone 12 Introduction

Tools and parts

Hardware tools

Apple tools are designed to apply the appropriate heat, force, and torque during repairs, and to withstand high-volume professional use.

• The heated display removal fixture softens adhesive to allow separation of the display from the enclosure. The fixture is used with a heated display pocket designed for the device’s specific dimensions.

• The display press applies the appropriate amount of pressure to secure new adhesive during display installation. The display press is used with a repair tray and display adhesive press plate designed for the device’s specific dimensions.

• The battery press applies the appropriate amount of pressure to secure new adhesive during battery installation. The battery press is used with a repair tray designed for the device’s specific dimensions.

Ordering tools and parts

You can learn how to order genuine Apple parts and tools at support.apple.com/self-service-repair .

During the purchase process, enter the manual ID RBQEVH to indicate that you’ve read this manual in its entirety and agree that you have the knowledge and experience to perform your intended repair.

Software tools

A System Configuration step may be required at the end of your repair. System Configuration is a postrepair software tool that completes the repair for genuine Apple parts. Running System

Configuration has a number of purposes that vary based on the part replaced.

What System

Configuration does

Transfers factory calibration values

Why it’s important

Certain parts like displays, cameras, and ambient light sensors have calibration values that are customized to each individual part during manufacturing.

Transferring these values ensures maximum performance and quality after a repair.

Links Secure

Element and biometric authentication parts

Ensures repair integrity

Assigns wireless region

After repair of a logic board or a biometric authentication part (Touch ID or

Face ID), linking the biometric sensors to the Secure Enclave on the logic board is required to ensure device security.

After a hardware repair, software checks are performed to ensure repair integrity.

Repair integrity means that a genuine Apple part has been correctly installed.

To comply with regional communications regulations, a wireless region must be assigned to your logic board.

Updates firmware Keeping firmware up to date ensures that the device has all the latest security and performance features.


iPhone 12 Introduction

System Configuration requires a strong Wi-Fi network capable of 1.0 Mbps download and upload speeds, with less than 400 ms latency and less than 2% packet loss. Estimated data usage to run

System Configuration is 6–22 MB.

The device must be running the latest version of iOS and not a beta version.

Learn how to initiate the System Configuration process at support.apple.com/self-service-repair .

Alerts

Failure to follow alerts could result in fire, injury, data loss, or damage to the device, parts, or other property.

Warning Instructions for reducing risk of personal injury

Caution

Important

Instructions for reducing risk of data loss or device hardware damage

Supplemental information for successfully completing procedures; neither a Warning nor a Caution


iPhone 12

Internal View

Internal View

1. TrueDepth camera assembly

2. Cameras

3. Camera flex cable

4. Top battery adhesive tabs

5. Battery

6. Bottom battery adhesive tabs

7. Speaker

8. Lightning connector

9. Bottom microphones


10. Taptic Engine

11. Taptic Engine connector cowling

12. SIM reader

13. SIM reader connector cowling

14. Multi-Touch connector

15. Battery flex cable

16. Display connector

17. Dock flex cable

18. Receiver/ambient light sensor/proximity sensor connector

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iPhone 12

Orderable Parts

Name

Battery

Camera

Camera cowling

Numbers

661-17920

661-17921

923-04989

Display

Display adhesive

Lower cowling

Rubber gasket

Security screws

661-18503

LL661-18503 (U.S.)

923-04893

923-04987

923-04937

—

SIM reader connector cowling 923-04983

SIM tray 923-05070 single, black

923-05071 single, white

923-05072 single, green

923-05073 single, red

923-05074 single, blue

923-05075 dual, black

923-05076 dual, white

923-05077 dual, green

923-05078 dual, red

923-05079 dual, blue

923-05684 single, purple

923-05685 dual, purple

Speaker

Taptic Engine

923-04915

923-04979

Orderable Parts

Screws

—

—

923-05068 (4) upper left, middle, lower left, lower middle

923-05069 (1) upper middle

—

—

923-04982 (2)

—

923-05080 (2) black

923-05081 (2) silver

923-04978 (2)

—


923-05052 (4)

923-04980 (3) upper left, right, SIM reader lower right (super screws)

923-04981 (1) lower middle

923-04982 (1) SIM reader upper left

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iPhone 12

Name

Taptic Engine connector cowling

Upper cowling

Numbers

923-04977

923-04985

Orderable Parts

Screws

923-04978 (2)

923-04982 (3) upper right, lower left, lower right

923-04988 (1) upper left


iPhone 12

Screws

Warning

• Never reinstall a screw after it has been removed. Install only new screws. iPhone screw grooves are covered in adhesive that can’t be reused.

• Use only the torque driver indicated to install new screws during reassembly. Both overtightened screws and loose screws can damage parts.

Note: You can use any torque driver to remove screws.

923-05069

923-04988

923-04982

923-05068

Screws

923-04978

923-04980

923-04981

923-05080

923-05081

Torque driver (black, 0.35 kgf cm)

Torque driver (gray, 0.55 kgf cm)

Torque driver (green, 0.45 kgf cm)

Crosshead screw

Super screw*

Trilobe screw

Security screw

*A super screw has a threaded hole that holds another screw.


923-04982

923-04980

923-05052

Single screw

Screw with super screw underneath

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iPhone 12

Tools

Tools

Tools with part numbers are available for purchase from the Self Service Repair Store. Tools without part numbers can be purchased from electronics supply retailers.

923-04877

6.1-inch back protective cover

923-04878 cover

661-19620 pocket

923-04908

6.1-inch repair tray

923-01092

Adhesive cutter

923-02657

Battery press

Cut-resistant gloves

923-04911

Display adhesive press plate

661-08916

Display press


iPhone 12

ESD mat

ESD-safe cleaning solution

ESD-safe tweezers

Tools

ESD wrist strap with clip or plug

Ethanol wipes 1

661-17619

Heated display removal fixture

Heat-resistant gloves IPA wipes

923-01290

Micro stix® bit

Nitrile or lint-free gloves

922-5065

Nylon probe (black stick) Safety glasses with side shields


iPhone 12

Sand 2 Sand container 3

923-02066

Super screw bit

923-0248

Torque driver (black,

0.35 kgf cm) kit4

923-00738

Torque driver (gray,

0.55 kgf cm)

923-00105

Torque driver (green,

0.45 kgf cm)

Tools

1 Ethanol wipes must contain at least 90% ethanol and no additives except isopropyl alcohol.

2 Clean, dry, untreated sand (8–10 cups)

3 Sand container (wide-mouthed, quick pour, nonbreakable plastic container with a flip-top lid)

4 The black torque driver kit includes a black torque driver (0.35 kgf cm), Torx® security bit (923-0247),

and JCIS bit (923-0246).


iPhone 12

Heated Display Removal Fixture

Tools | Heated Display Removal Fixture

Note: A rented heated display removal fixture may have different packaging than shown. If your fixture came with a USB cable, set the cable aside. This setup doesn’t require it.

1. Remove the fixture from the box. Then remove the packing Styrofoam.

Caution

Don’t lift the fixture by the knob.

2. Cut and remove the zip tie from the handle.


iPhone 12

3. Turn the top knob on the fixture counterclockwise to raise the suction cup.

Remove the packing

Styrofoam.

Tools | Heated Display Removal Fixture

4. Turn the emergency stop knob clockwise until it clicks and protrudes from the stop guard.

5. Plug the power cord into the fixture. The fixture won’t turn on until you flip the switch on the back.


iPhone 12

Battery Safety

Battery Safety

Warning

• This device contains a built-in lithium-ion rechargeable battery with soft battery cells. Battery safety is the number one concern when repairing a device with a built-in lithium-ion battery.

• Only technicians with the knowledge, experience, and tools required to repair electronic devices should replace a battery.

• Improper battery replacement, improper handling of parts, failure to discharge the battery before repair, or failure to follow the provided instructions could cause battery overheating, swelling, venting, leaking, or a battery thermal event. These events could result in fire, injury, death, data loss, or damage to the device, parts, or other property.

• To avoid these potentially harmful events, follow the battery safety guidelines and work in a safety-focused workspace with the tools listed below. It’s important to be prepared for all possible outcomes.

How to set up a workspace for battery safety

Tools

• Clean, dry, untreated sand (8–10 cups)

• Sand container (wide-mouthed, quick pour, nonbreakable plastic container with a flip-top lid)

• Heat-resistant gloves

• Safety glasses with side shields

• ESD-safe cleaning solution

Workspaces used to repair Apple devices should meet the following criteria:

• Nonflammable and electrostatic discharge (ESD)-safe work bench

• At least 2 feet away from paper and other combustible materials

• Sand container within reach (2 feet) on both sides of the workspace, not above the workspace

• Adequate ventilation


iPhone 12 Battery Safety

Warning

How to handle a battery thermal event

A battery thermal event is a rapid chemical chain reaction that occurs inside a battery cell.

The energy stored in the battery is released suddenly, which can cause outgassing and fire.

A battery thermal event can be triggered by physical damage to the battery, improper replacement or repair, or temperatures outside the battery’s operating range.

Act immediately if you notice any of the following signs of a battery thermal event:

• The lithium-ion battery or a device that contains one begins to smoke or emit sparks or soot.

• The battery pouch suddenly and quickly puffs out.

• The lithium-ion battery or a device that contains one begins to emit hissing or popping sounds.

Don’t use water or an ABC or carbon dioxide fire extinguisher on a battery thermal event or a device that is undergoing one. Water and ABC or carbon dioxide fire extinguishers won’t stop the reaction.

Do smother the battery or device immediately with plenty of clean, dry sand. Dump the sand all at once. Timing is critical — the faster you pour all the sand, the sooner the reaction will be contained.

Do contact local fire authorities if further assistance is needed.

Do leave the room for 30 minutes after the reaction is contained. Ventilate the area. Don’t return until the area is clear of smoke.

Do wait 30 minutes before touching the device. Wear the heat-resistant gloves and safety glasses with side shields to remove the device from the sand.

Do wipe the affected area with water first. Then wipe the area with an ESD-safe cleaning solution.

Do dispose of the damaged battery or device (including any debris removed from the sand) according to local environmental laws and guidelines.


iPhone 12

How to handle batteries

Battery Safety

Warning

Fully discharge the battery before you begin a repair. A discharged battery is less susceptible to a battery thermal event. If you can’t determine the battery level, don’t repair the device.

Perform the following steps to discharge the battery:

• Disconnect all external cables.

• Remove all cases and covers.

• Turn on the flashlight from the Lock Screen, in Control Center, or by asking Siri. Wait until the device has turned off and the flashlight is no longer illuminated.

Caution

The flashlight produces heat. Keep the iPhone in a well-ventilated area while the flashlight is illuminated.

Best practices

• To avoid noxious fumes or a battery thermal event, don’t puncture, strike, or crush a lithium-ion battery or a device that contains one.

• Keep your workspace clear of foreign objects and sharp materials.

• Be careful when using sharp tools near the battery.

• Don’t leave loose screws, extra screws, or small parts inside the device.

• Don’t use tools that conduct electricity.

• Don’t throw or drop the battery.

• Don’t expose the battery to excessive heat or sunlight, or temperatures outside the battery’s operating range.

• Handle and dispose of waste batteries in accordance with local laws and regulations.


iPhone 12

Broken Glass

Broken Glass

Warning iPhone displays and some back covers are made of glass. The glass could break if the iPhone is dropped on a hard surface, receives a substantial impact, or is crushed, bent, or deformed.

Don’t attempt to remove chipped or cracked glass shards.

Tools

• Back protective cover

• Cut-resistant gloves

• Display protective cover

• Heated display pocket


• Vacuum cleaner

If the iPhone glass is broken, perform the following steps before you begin a repair:

1. Put on safety glasses with side shields and the cut-resistant gloves.

2. Use a vacuum cleaner to remove glass pieces from your workspace and the iPhone.

3. Attach a protective cover to the broken glass to prevent injury or scattering of glass. Each protective cover has a release liner underneath. Slowly pull the release liner out from under the protective cover while pressing the cover onto the enclosure.

4. Fold the release liner. Use the shiny side of the release liner to firmly press the protective cover onto the broken glass and smooth out any air bubbles.

5. Wait at least 12 minutes for the bond between the protective cover and the glass to strengthen.

6. If the back glass is broken, place the iPhone into the heated display pocket.


iPhone 12

If the iPhone has any of the following conditions, stop the repair:

• There’s no glass or insufficient glass for the protective cover to adhere to.

• The protective cover doesn’t adhere to the iPhone.

• The iPhone doesn’t fit in the heated display pocket.

You can find a service option at support.apple.com/repair .

Broken Glass


iPhone 12

First Steps

Always perform the following steps before starting a repair:

• Back up the iPhone .

•

Discharge the battery fully .

• Turn off the iPhone .

• Disconnect all cables.

• Remove all cases and covers.

• Clear and clean your workspace.

• Put on an ESD wrist strap and attach it to a properly grounded ESD mat.

Caution

ESD (electrostatic discharge, or the release of static electricity) can damage electronic components.

First Steps

Be aware of the following while performing a repair:

• The manual for this model may show images of other models, but the procedures are the same.

Ensure that you use the correct tools for the model you’re repairing.

• Take your time. Thoroughly read all instructions and alerts.

• Magnetizing the torque drivers will make it easier to work with small screws.

• The end of each flex cable must align with its connector. Press the end of each flex cable to its connector until it clicks to ensure that it’s secure.

Warning

Loose screws, extra screws, or small parts inside the device can damage the battery and cause safety issues. Set aside all parts and screws removed during the repair and account for them at the end of the repair.


iPhone 12

SIM Tray

Tools

• SIM-eject tool or paper clip

Removal

1. Find your model to locate the SIM tray .

2. Insert a paper clip or SIM-eject tool into the hole next to the SIM tray.

3. Push the paper clip or SIM-eject tool toward the enclosure to eject the SIM tray.

4. Remove the SIM tray.

Reassembly

1. Press the SIM tray back into the side of the enclosure.

SIM Tray


iPhone 12

Display

Before You Begin

Display | Before You begin

Warning

•

Read

Battery Safety and follow workspace and battery handling guidelines before you begin.

•

Read

Broken Glass

before you begin.

Tools

• 6.1-inch heated display pocket

• 6.1-inch repair tray

• Adhesive cutter

• Display adhesive press plate

• Display press

• ESD-safe tweezers

• Ethanol wipes or isopropyl alcohol (IPA) wipes

• Heated display removal fixture


• Micro stix bit

• Nylon probe (black stick)

• Torque driver (black, 0.35 kgf cm)

• Torque driver (gray, 0.55 kgf cm)

• Torx security bit


iPhone 12

Caution

• To avoid damaging the lenses, don’t touch the TrueDepth camera assembly or nearby parts.

• Don’t touch the back of the display.

Touching the back of the display may affect image quality.

Display | Before You begin

Important

• This procedure requires

System Configuration . After you’ve completed all removal and

reassembly steps, learn how to initiate the System Configuration process at support.apple.com/self-service-repair .

• Read Heated Display Removal Fixture if you’re setting up the fixture for the first time.


iPhone 12

Removal

1. Use a torque driver and the

Torx security bit to remove the two security screws, one from each side of the

Lightning connector. Set aside the screws.

2. Flip the switch on the back of the heated display removal fixture to turn it on.

The internal fan will turn on. Wait for a checkmark to appear on the screen.

Note: If an error code appears on the screen, turn off the fixture and turn it back on.

Display | Removal


iPhone 12

3. Gently insert the iPhone into the heated display pocket with the display faceup and the Lightning connector facing the bottom of the pocket.

Important

Ensure that the clamp on the side of the pocket is flipped up.

4. Flip down the clamp on the side of the pocket to lock the iPhone into place.

Display | Removal


iPhone 12

5. Put on the heat-resistant gloves. Align the cutout on the bottom of the pocket with the rail on the fixture.

Slide the pocket with the iPhone onto the rail on the fixture.

Warning

Don’t insert the pocket into the fixture without wearing the heat-resistant gloves.

Display | Removal


iPhone 12

6. Slide the pocket into the fixture until you hear the pocket click into place.

Note: The screen on the fixture will turn red and the timer will count down from 2 minutes while the pocket heats to the correct temperature. When the timer ends, the fixture will start to beep and the screen will turn green.


Display | Removal

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iPhone 12

7. Turn the knob on the fixture clockwise to lower the suction cup as close to the iPhone as possible without touching the iPhone.

Caution

To avoid damaging the iPhone, don’t turn the knob before the timer beeps.

Note: The fixture will beep until the suction cup is lowered.

8. Grasp the handle and slide the suction cup straight out until the edge of the suction cup aligns with the bottom edge of the display.

Caution

Failure to align the edges of the suction cup and the display may damage the iPhone.


Display | Removal

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iPhone 12

9. Turn the knob on the fixture clockwise to lower the suction cup onto the display (1).

Then flip down the handle on the suction cup to secure the suction cup to the display (2).

10. Slowly turn the knob on the fixture counterclockwise until the display begins to separate from the enclosure.

Important

If you don’t see a gap between the display and the enclosure immediately, wait 30 seconds. If you still don’t see a gap, turn the silver part of the knob counterclockwise until the display begins to separate from the enclosure.


Display | Removal

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iPhone 12

11. Insert the edge of the adhesive cutter between the display and the enclosure.

Run the cutter between the display and the enclosure to the right and left as shown until the display partially releases from the enclosure.

Display | Removal

Caution

To avoid damaging the flex cables, don’t tilt up the bottom of the display more than 5 degrees.


iPhone 12

12. Flip up the handle to release the suction cup (1). Gently slide the flat end of the black stick under the edge of the suction cup to release it from the display (2).

Caution

Don’t turn the knob.

Turning the knob may damage the flex cables.

13. Press the eject button on the side of the pocket to release the pocket from the fixture.

Display | Removal


iPhone 12

14. Hold both sides of the pocket and slide it straight out of the fixture.

Display | Removal

15. Flip up the clamp on the side of the pocket to release the iPhone (1). Hold the area outlined in blue and gently remove the iPhone from the pocket (2).

16. Place the iPhone into the repair tray with the display faceup and the Lightning connector facing the cutout. Remove the gloves.


iPhone 12

17. Slide the display slightly toward the bottom of the iPhone.

18. Insert the edge of the adhesive cutter into the top of the iPhone between the display and the enclosure.

Hold the adhesive cutter at a 45-degree angle. Start at the middle and cut along the top and sides of the iPhone until the display is free.

Caution

To avoid damaging the flex cables, don’t tilt up the bottom of the display more than 5 degrees.


Display | Removal

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19. Insert the repair tray suction cups into the slots in the repair tray.

Display | Removal

20. Tilt up the display toward the suction cups. Press the top and bottom edges of the display to secure it to the suction cups.

Caution

• To avoid damaging the enclosure or display, ensure that the internal display clips are released before you tilt up the display.

• Don’t damage the flex cables as you tilt up the display.

Warning

If the battery is dented, punctured, or otherwise damaged, stop the repair. You can find a service option at support.apple.com/repair .


iPhone 12


Micro stix bit to remove the two trilobe screws from the lower cowling. Set aside the screws.

22. Use ESD-safe tweezers to remove the lower cowling. Save the cowling for reassembly.

Display | Removal


iPhone 12

23. Use a torque driver and the Micro stix bit to remove three trilobe screws from the upper cowling. Set aside the screws.

24. Hold the upper cowling in place and use a torque driver and the Micro stix bit to remove the last trilobe screw.

Set aside the screw.

Display | Removal

25. Use ESD-safe tweezers to remove the upper cowling. Save the cowling for reassembly.


iPhone 12

26. Use the black stick to lift the end of the battery flex cable off the connector.

Caution

You must disconnect the battery flex cable first to ensure that the iPhone remains turned off.

27. Use the black stick to lift the end of the display flex cable off the connector.

Display | Removal


iPhone 12

28. Use the black stick to lift the end of the Multi-Touch flex cable off the connector.

29. Use the black stick to lift the end of the receiver flex cable off the connector.

Display | Removal

30. Hold the display by the edges. Pull the tabs on the suction cups to release them from the display.

Then set the display facedown on a clean, flat surface.

31. Remove the suction cups from the repair tray.


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32. Use ESD-safe tweezers to pick up the adhesive. Then pull the adhesive to remove it from the enclosure.

Repeat this process until all the adhesive is removed from the perimeter of the enclosure.

Caution

Don’t touch the

TrueDepth camera assembly, grounding springs, or nearby parts.

Display | Removal

33. Use ethanol wipes or IPA wipes to clean any adhesive residue from the enclosure.

Caution

Don’t use ethanol wipes or IPA wipes on the display. Ethanol or isopropyl alcohol may damage the display and affect image quality.


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Reassembly

1. Inspect the internal display clips for damage before reassembly. Ensure that the internal display clips are at a

90-degree angle and aren’t bent or damaged.

Important

• If the internal display clips are damaged, you may need to replace the display.

• If you’re installing a replacement display, peel the protective liner from the top and underside of it.

2. Place the enclosure in the repair tray with the Lightning connector facing the cutout.

Display | Reassembly


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3. Inspect the TrueDepth camera. Ensure that the top edge of the TrueDepth camera is under the lip of the enclosure.

Correct position


Incorrect position

Caution

If the TrueDepth camera is positioned incorrectly, use the black stick to move it away from the grounding clip. Then insert the top edge of the

TrueDepth camera under the lip of the enclosure.

Warning

Inspect the enclosure for loose or extra screws and small parts, which can damage the battery and cause safety issues.


iPhone 12 Display | Reassembly

4. Align the replacement display adhesive over the enclosure with the top holes over the TrueDepth camera assembly and the bottom tab on the right.

Caution

Ensure that you’ve removed all adhesive residue from the display and the enclosure before you apply the replacement display adhesive.

5. The replacement display adhesive has a top release liner, a middle release liner, and a bottom release liner.

Grasp the tab on the bottom release liner. Then slowly pull the bottom release liner (1) out from under the adhesive (2) while pressing the adhesive onto the enclosure.

Important

Don’t remove the top release liner yet.

Bottom release liner

Adhesive


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6. Place the display adhesive press plate on top of the enclosure with the icon in the top right corner as shown.

7. Position the repair tray with the iPhone in the display press. Pull down the lever until the display press locks.



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8. Wait until the timer on the display press beeps. Pull down the lever (1) and pull out the release knob (2).

Then lift the lever (3).



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9. Remove the repair tray from the display press and remove the press plate.

10. Remove the left section of the top release liner first (1).

Then remove the three sections running along the top (2), right (3), and bottom (4).

Important

Don’t remove the middle release liner yet.


Top release liner

11. Insert the suction cups into the repair tray.


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12. Align the left edge of the display with the left edge of the enclosure as shown.

Gently press along the edges of the display to secure it to the suction cups.

13. Press the ends of the receiver flex cable (1),

Multi-Touch flex cable (2), and display flex cable (3) to the connectors. Press evenly along the length of each connector.

Note: The display flex cable covers the Multi-Touch flex cable.

14. Press the end of the battery flex cable to the connector (4). Press evenly along the length of the connector.

15. Use ESD-safe tweezers to position the lower cowling over the ends of the

Multi-Touch, display, and battery flex cables.

16. Use the black torque driver and Micro stix bit to install two new trilobe screws into the lower cowling.



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iPhone 12

17. The upper cowling has a tab near the second screw hole (2) that fits into a slot near the camera cowling. Use ESD-safe tweezers to fit the tab into the slot. Then lower the cowling over the end of the receiver flex cable.

18. Use the black torque driver and Micro stix bit to install four new trilobe screws into the upper cowling in the order shown.

19. Peel the first strip of the middle release liner (1) counterclockwise, starting near the bottom of the enclosure. Peel the second strip (2) clockwise, starting near the bottom of the enclosure. Peel the third strip (3) counterclockwise, starting near the top of the enclosure.

Middle release liner



073-00291-A | 47

iPhone 12 Display | Reassembly

20. Inspect the display adhesive to ensure that it’s in the correct position and not damaged or wrinkled.

If the adhesive is damaged, remove it and apply replacement adhesive.

21. Repeat step 3 to ensure that the TrueDepth camera is in the correct position. Then continue to step 22.

Warning


22. Pull the tabs on the suction cups to release them from the display. Tilt down the display to rest on the enclosure.

23. Remove the suction cups from the repair tray.


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24. Press all four corners of the display simultaneously.

Then press along the edges of the display until you hear a click and the display is flush with the enclosure.

Caution

Ensure that the flex cables aren’t trapped between the display and the enclosure. Feel the edges of the display for variations or gaps. If the display isn’t flush, repeat all removal steps and check the flex cables for damage. Then repeat reassembly steps 1 through 24.



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iPhone 12

25. Position the repair tray with the iPhone in the display press. Pull down the lever until the display press locks.


26. Wait until the timer on the display press beeps. Pull down the lever (1) and pull out the release knob (2).

Then lift the lever (3).


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27. Remove the repair tray from the display press.

28. Use the gray torque driver and Torx security bit to install two new security screws, one on each side of the Lightning connector. As you install the screws, press lightly on the display near the Lightning connector.

Caution

If the screws aren’t flush, remove and set aside the screws. Repeat step 28 to install another new set of screws. If the new screws still aren’t flush, repeat all removal and reassembly steps.


Important

• System Configuration is required if you’ve installed a replacement display, battery, or camera. Disregard notifications about iPhone features on the Lock Screen until you complete

System Configuration.

• After you’ve completed all removal and reassembly steps, learn how to initiate the System

Configuration process at support.apple.com/self-service-repair .


iPhone 12

Camera


Camera | Before You begin

Warning

Read


Remove the following part before you begin:

•

Display

Tools



• JCIS bit

• Micro stix bit

• Nitrile or lint-free gloves


• Torque driver (green, 0.45 kgf cm)



iPhone 12

Caution

• To avoid damaging the lenses, don’t touch the TrueDepth camera assembly or nearby parts.

• Avoid the grounding springs on the camera cowling and enclosure.

Camera | Before You begin

Important

This procedure requires System Configuration

. After you’ve completed all removal and reassembly steps, learn how to initiate the System Configuration process at support.apple.com/self-service-repair .


iPhone 12

Removal


Camera | Removal


JCIS bit to remove the crosshead screw from the camera cowling. Set aside the screw.


Micro stix bit to remove the four trilobe screws from the camera cowling in the order shown. Set aside the screws.


iPhone 12

4. Use ESD-safe tweezers to remove the camera cowling.

Save the cowling for reassembly.

5. Use ESD-safe tweezers to gently lift the end of the top camera flex cable off the connector.

Note: One camera flex cable covers the other.

Camera | Removal


iPhone 12

6. Use ESD-safe tweezers to gently lift the end of the bottom camera flex cable off the connector.

7. Gently hold the flex cables together and lift the cameras out of the enclosure.

Camera | Removal


iPhone 12 Camera | Reassembly

Reassembly

1. Put on the gloves to prevent contamination of the camera lenses. Then hold the replacement cameras with the lenses facedown and remove the protective cover from the camera lenses.

2. Tilt down the cameras under the lip of the enclosure.

Then lower the cameras into position.

3. Press the end of the bottom camera flex cable to the connector.

4. Press the end of the top camera flex cable to the connector.

5. Lightly press the cameras into the enclosure.


iPhone 12

6. The camera cowling has tabs that fit into slots under the lip on the right side of the enclosure. Hold the cowling with ESD-safe tweezers and slide the cowling tabs into the slots.

Then lower the cowling onto the cameras.

Caution

• Avoid touching the grounding spring as you reinstall the camera cowling.

• Ensure that the screw cutouts in the camera cowling align with the screw holes. A misaligned camera cowling may affect display image quality.

Camera | Reassembly


iPhone 12

7. Use the green torque driver and Micro stix bit to install four new trilobe screws into the camera cowling in the order shown.

Camera | Reassembly

8. Use the gray torque driver and JCIS bit to install one new crosshead screw into the camera cowling.

Reinstall the following part to complete reassembly:

•

Display

Important

After you’ve completed all removal and reassembly steps, learn how to initiate the System



iPhone 12

Speaker


Speaker | Before You begin

Warning

Read


Remove the following part before you begin:

•

Display

Tools



• JCIS bit




iPhone 12

Removal


Speaker | Removal


JCIS bit to remove the four crosshead screws from the speaker. Set aside the screws.

3. Use the black stick to tilt up the speaker. Then remove the speaker from the enclosure.


iPhone 12

Reassembly

1. Rotate the repair tray.

Ensure that the rubber gasket is positioned as shown.

2. If the rubber gasket is out of position, use ESD-safe tweezers to reposition it.

Speaker | Reassembly


iPhone 12

3. Rotate the repair tray. Tilt down the bottom edge of the speaker and lower it into the enclosure.

Caution

Don’t damage the grounding springs on the speaker.

4. Use the green torque driver and JCIS bit to install four new crosshead screws into the speaker.

Speaker | Reassembly


•

Display


iPhone 12

Battery


Battery | Before You begin

Warning

• A battery should be replaced only by individual technicians with the knowledge and experience to repair electronic devices. Improper battery replacement, improper handling of parts, or failure to follow the provided instructions could result in fire, injury, data loss, or damage to the device, parts, or other property.

• Read


Remove the following parts before you begin:

•

Display

•

Speaker

Tools


• Battery press

• ESD-safe cleaning solution


• Ethanol wipes or isopropyl alcohol (IPA) wipes


• Nitrile or lint-free gloves



• Sand

• Sand container

• Super screw bit



iPhone 12

Caution

To avoid damaging the lenses, don’t touch the TrueDepth camera assembly or nearby parts.

Battery | Before You begin

Important

This procedure requires System Configuration

. After you’ve completed all removal and reassembly steps, learn how to initiate the System Configuration process at support.apple.com/self-service-repair .


iPhone 12

Removal


Battery | Removal

2. Use a torque driver and the screw super bit to remove the super screw from the upper right corner of the

Taptic Engine. Set aside the screw.


iPhone 12

3. Use ESD-safe tweezers to grasp the bottom right battery adhesive tab. Gently peel the adhesive tab away from the battery.

Note: The battery has four adhesive tabs.

Battery | Removal

Warning

Don’t scrape or puncture the battery with the tweezers.


iPhone 12

4. Hold down the iPhone.

Use ESD-safe tweezers to continue peeling the adhesive tab from the battery.

Important

Peel the adhesive tab completely from the battery before twisting it around the tweezers.

Battery | Removal


iPhone 12

5. Keep the tweezers close and parallel to the battery and twist until you see white adhesive strip on the tweezers.

Important

Don’t pull the tweezers until the white adhesive is wrapped around them.

6. Pull the tweezers toward the bottom of the iPhone and continue to twist the adhesive strip until you’ve removed the entire strip.

Caution

Don’t pull the adhesive strip against parts or screws.

Important

If the battery adhesive tab or strip breaks off and you can still see it, attempt to retrieve it with the tweezers. Wrap the tab or strip around the tweezers and repeat steps 5 and 6. If you can’t see the tab or strip, continue to step 7.


Battery | Removal

073-00291-A | 69

iPhone 12 Battery | Removal

7. Use ESD-safe tweezers to grasp the bottom left battery adhesive tab. Gently peel the adhesive tab away from the battery.

8. Repeat steps 4 through 6 to remove the bottom left adhesive strip from the battery. If you remove the entire strip, continue to step 9.

Important

• Pull the bottom left adhesive strip away from the Taptic Engine.

• If the battery adhesive tab or strip breaks off and you can still see it, attempt to retrieve it with the tweezers. Wrap the tab or strip around the tweezers and repeat steps 5 and 6. If you can’t see the tab or strip, continue to step 9.

9. Rotate the repair tray and put on the nitrile or lint-free gloves.

10. Use ESD-safe tweezers to gently peel the two battery adhesive tabs from the top of the battery.


iPhone 12

11. Hold down the iPhone. Use

ESD-safe tweezers to grasp one battery adhesive tab.

Then twist the tweezers to wrap the adhesive tab around them.

Important

Hold the tweezers close and parallel to the battery as you twist.

12. Keep the tweezers in the channel between the battery and the camera cowling. Continue to slowly twist the tweezers until you’ve removed the entire adhesive strip.

Important

If the battery adhesive tab or strip breaks off and you can still see it, attempt to retrieve it with the tweezers. Wrap the tab or strip around the tweezers and repeat step 12. If you can’t see the tab or strip, continue to step 13.


Battery | Removal

073-00291-A | 71


13. Repeat steps 11 and 12 to remove the remaining battery adhesive strip from the top of the battery.

If you remove the entire adhesive strip, continue to step 14.

Important

If the battery adhesive tab or strip breaks off and you can still see it, attempt to retrieve it with the tweezers. Wrap the tab or strip around the tweezers and repeat step 12. If you can’t see the tab or strip, continue to step 14.

14. If all four battery adhesive strips were fully removed, continue to step 16. If at least one strip was fully removed, continue to step 15.

Warning

If all four strips were broken and can’t be retrieved, don’t forcibly pry the battery. Stop the repair.

You can find a service option at support.apple.com/repair .


iPhone 12

Caution

When using the black stick to remove the battery from the enclosure, don’t damage the flex cables.

Don’t scrape, rip, tear, or otherwise damage the polyester film or other areas. If damage occurs, replace the iPhone.

15. Insert the flat end of the black stick into one of the insertion points as shown.

Ensure that the black stick is inserted into a point where the battery strip has been fully removed. Don’t insert the black stick into a point where the battery tab or strip is broken.


Battery | Removal

073-00291-A | 73


16. Slightly lift the battery with the black stick just enough to grasp underneath the battery.

Caution

To avoid damage, don’t press the black stick on the edge of the enclosure as you lift the battery.

17. Remove the battery from the enclosure. Then inspect the enclosure for damage. If the enclosure is damaged, replace the iPhone.

Warning

If you can’t remove the battery, stop the repair. You can find a service option at support.apple.com/repair .


iPhone 12 Battery | Reassembly

Reassembly

1. Use the gray torque driver and super screw bit to install one new super screw into the upper right corner of the Taptic Engine.

2. Reinstall the

Speaker

.

3. Use ethanol wipes or

IPA wipes on the area shown in blue to remove any remaining adhesive from the enclosure.

Caution

Don’t use ethanol wipes or IPA wipes on the areas outlined in red. Ethanol or isopropyl alcohol may damage the polyester film and wireless charging unit.

Warning



iPhone 12

4. Peel the pink release liner from the underside of the replacement battery.

Important

Don’t remove the battery protective cover from the top of the battery yet.

Battery | Reassembly

5. Hold the battery over the enclosure with the protective cover faceup. Align the bottom of the battery with the speaker (1) and the left edge with the logic board (2).

Then lower the battery into the enclosure.


iPhone 12

6. The center of the repair tray has two slots. Position the repair tray and enclosure onto the battery press with the left slot over the pin as shown.

7. Flip down the red lever to lower the roller onto the battery.



iPhone 12

8. Slide the repair tray back and forth through the battery press three times to adhere the battery to the enclosure.

9. Flip up the red lever.



iPhone 12

10. Position the repair tray and enclosure onto the battery press with the right slot over the pin.

11. Flip down the red lever.



iPhone 12

12.

Slide the repair tray back and forth through the battery press three times to adhere the battery to the enclosure.

13. Flip up the red lever.



iPhone 12

14. Remove the repair tray from the battery press.

15. Hold the edges of the protective cover. Pull the release tabs on the protective cover to remove the cover from the battery.

Important

Don’t press the area over the tab you’re releasing.



•

Display

Warning

Gently shake the iPhone. If the battery sounds loose, remove the display

and the battery . Then

complete battery reassembly with another replacement battery.

Important

After you’ve completed all removal and reassembly steps, learn how to initiate the System



iPhone 12

Taptic Engine


Taptic Engine | Before You begin

Warning

Read


Remove the following parts before you begin:

•

Display

•

Speaker

Tools



• JCIS bit

• Micro stix bit


• SIM-eject tool

• Super screw bit

• Torque driver (black, 0.35 kgf cm)




iPhone 12 Taptic Engine | Removal

Removal

1. Remove the enclosure from the repair tray.

2. Remove the SIM tray

.



Micro stix bit to remove the two trilobe screws from the

SIM reader connector cowling.

Set aside the screws.

5. Use ESD-safe tweezers to remove the SIM reader connector cowling. Save the cowling for reassembly.


Micro stix bit to remove the two trilobe screws from the

Taptic Engine connector cowling. Set aside the screws.

7. Use ESD-safe tweezers to remove the Taptic Engine connector cowling. Save the cowling for reassembly.


iPhone 12

8. Use ESD-safe tweezers to lift the end of the SIM reader flex cable off the connector.


Micro stix bit to remove the trilobe screw from the upper left corner of the SIM reader.


Taptic Engine | Removal


iPhone 12

10. Use a torque driver and the super screw bit to remove the super screw from the lower right corner of the SIM reader.


11. Tilt up the SIM reader and lift it out of the enclosure.



iPhone 12

12. Use a torque driver and the super screw bit to remove the two super screws from the corners of the

Taptic Engine. Set aside the screws.

13. Use a torque driver and the JCIS bit to remove the crosshead screw from the bottom of the Taptic Engine.




iPhone 12

14. Use ESD-safe tweezers to lift the end of the

Taptic Engine flex cable off the connector.

15. Use ESD-safe tweezers to remove the Taptic Engine.



iPhone 12

Reassembly

1. Position the Taptic Engine in the enclosure.

2. Press the end of the

Taptic Engine flex cable to the connector.

Taptic Engine | Reassembly


iPhone 12

3. Use the green torque driver and JCIS bit to install one new crosshead screw into the Taptic Engine.

4. Use the gray torque driver and super screw bit to install two new super screws into the Taptic Engine.



iPhone 12

5. Tilt the SIM reader into the enclosure.

6. Use the black torque driver and Micro stix bit to install one new trilobe screw into the upper left corner of the

SIM reader.



iPhone 12

7. Use the gray torque driver and super screw bit to install one new super screw into the lower right corner of the

SIM reader.


8. Press the end of the SIM reader flex cable to the connector.

9. Position the SIM reader connector cowling (1) over the end of the flex cable.

10. Position the Taptic Engine connector cowling (2) over the end of the flex cable.

Caution

Inspect the grounding spring on the Taptic Engine connector cowling to ensure that it’s not damaged.


iPhone 12

11. Use the black torque driver and Micro stix bit to install four new trilobe screws into the SIM reader and

Taptic Engine connector cowlings.

Caution

Avoid touching the grounding spring as you reinstall the Taptic Engine connector cowling.

12. Remove the enclosure from the repair tray.

13. Reinstall the

SIM tray .

Reinstall the following parts to complete reassembly:

•

Speaker

•

Display


Micro stix® is a registered trademark of OSG CORPORATION. Torx® is a registered trademark of Acument Intellectual Properties, LLC.


Apple iPhone 12 Manual

iPhone 12

Repair Manual

Contents

Basics

Safety

Procedures

Introduction

Warranty information

Tools and parts

Alerts

Internal View

Orderable Parts

Screws

Tools

Battery Safety

How to set up a workspace for battery safety

How to handle a battery thermal event

How to handle batteries

Broken Glass

First Steps

SIM Tray

Display

•

•

Camera

Speaker

Battery

Taptic Engine

Related manuals

Table of contents

Apple iPhone 12 Manual

iPhone 12

Repair Manual

Contents

Basics

Safety

Procedures

Introduction

Warranty information

Tools and parts

Alerts

Internal View

Orderable Parts

Screws

Tools

Battery Safety

How to set up a workspace for battery safety

How to handle a battery thermal event

How to handle batteries

Broken Glass

First Steps

SIM Tray

Display

•

•

Camera

Speaker

Battery

Taptic Engine

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Table of contents