Google Pixel 4 LCD Screen Replacement Guide

Google Pixel 43 years ago280 Views

Replacing the screen on a Google Pixel 4 can be a detailed repair because the display assembly is integrated with the frame, while many of the phone’s internal components need to be transferred to the replacement assembly.

This guide covers the complete Google Pixel 4 LCD screen replacement process, including removing the back cover, disconnecting the internal components, transferring the parts to the new screen frame, testing the phone, and reinstalling the back cover.

Repair Information

Repair InformationDetails
DeviceGoogle Pixel 4
Repair TypeLCD Screen Replacement
Repair Difficulty★★★★★
Estimated Time1.5–2.5 hours

Reasons for Replacing the Google Pixel 4 Screen

A damaged front screen assembly may need to be replaced when the display or front assembly is broken or otherwise needs replacement.

For this repair, the existing phone is completely disassembled so that the internal components can be transferred to the replacement screen frame. Choosing a replacement screen that already includes the frame and buttons can simplify the process considerably.


Before You Begin

Compatibility and Model Numbers

This repair guide based on Google Pixel 4

Model Numbers | G020M, G020I, GA01188-US, GA01187-US, GA01189-US, GA01191-US, GA01189-US

Tools Required

  • Mobile phone heating pad or hairdryer/heat gun
  • Plastic pry tool / card pry
  • Suction cups
  • Torx T3 screwdriver
  • Torx T4 screwdriver
  • Torx T5 screwdriver
  • Tweezers (for connectors)
  • B7000 glue or double-sided adhesive (for back cover)
  • Rubber bands or bonding clips to secure the back cover

How to Find Tools and Parts

Step-by-Step Google Pixel 4 LCD Screen Replacement

Step 1: Turn Off the Phone and Heat the Back Cover

Start by turning off the Google Pixel 4.

The first part of the disassembly is removing the back cover. Place the back-cover side of the phone on a heating pad and select the mobile phone heating option. Allow the heating process to complete.

Alternatively, a heat gun or hairdryer can be used.

Important: Heat the back cover gently so the adhesive softens without applying unnecessary heat to the phone.


Step 2: Remove the Back Cover

Once the back cover has been sufficiently heated, use a suction cup to create an opening between the frame and back cover.

Insert a plastic card pry tool or something similar into the opening and carefully cut through the adhesive around the back cover.

Important: Be gentle while removing the back cover because the flash sensor plug is connected to it.


Step 3: Disconnect the Back Cover Components

Remove the first bracket by undoing its five screws.

Next, remove the sensor bracket by undoing its two screws.

Disconnect the battery plug and sensor block from the board. Once these connections have been released, the back cover assembly can be separated from the phone body.


Step 4: Remove the Internal Bracket

Remove the next bracket by undoing its four screws.

Keep the screws and bracket organized so they can be returned to the replacement frame during reassembly.


Step 5: Remove the Front Camera Module

Remove the front camera module by disconnecting its three plugs and undoing its two screws.

Carefully take the camera module out of the phone and set it aside for installation on the replacement frame.


Step 6: Remove the Additional Bracket

Remove the next bracket by undoing its two screws.

With the bracket removed, continue preparing the phone for logic board removal.


Step 7: Remove the Logic Board

Before removing the logic board, disconnect its seven connector blocks and the antenna head.

Move the cables aside carefully as you pull the board out of the frame.

Important: Be gentle with the cables and connectors while removing the board.

Make sure the SIM tray is also removed during this stage so the logic board can be taken out properly.


Step 8: Remove the Battery

The battery is secured with adhesive, so heat is required to loosen it.

For this procedure, a heat gun is used to warm the battery area.

Once the adhesive has softened sufficiently, use a pry tool to carefully cut through the adhesive underneath the battery and remove it.


Step 9: Remove the Button Flex

Remove the button flex by undoing the two screws securing it to the frame.

The cable is also held with adhesive, so carefully cut underneath the cable to release it from the frame.

Important: Be gentle with the button flex while separating it from the adhesive.


Step 10: Remove the Earpiece and Proximity Sensor

Remove the earpiece and proximity sensor from the body.

Apply some heat to soften the adhesive, then gently pull the sensor flex away from the body.

Work carefully because the sensor flex needs to be transferred to the replacement frame.


Step 11: Remove the Earpiece Module and Button Plates

Apply additional heat to help loosen the adhesive around the earpiece module.

Next, remove the button plates.

Keep these parts organized because they will be transferred to the new screen frame.


Step 12: Remove the Speaker Buzzer

Remove the speaker buzzer by undoing its two screws.

Take the speaker out of the frame and set it aside for reinstallation.


Step 13: Remove the Charging Port Flex

Remove the charging port flex by undoing its screw.

Then disconnect the Taptic Engine connector so the charging port flex can be removed.


Step 14: Remove the Microphone Flex and Taptic Engine

Next, remove the microphone flex.

Then apply heat to the Taptic Engine to soften the adhesive holding it in place.

Once the adhesive has been loosened, carefully remove the Taptic Engine from the frame.


Step 15: Prepare the Replacement Screen Frame

At this point, the remaining assembly is the broken front screen and frame, while the required internal components have been removed.

Before continuing, make sure the replacement screen frame and transferred components are ready.

As mentioned earlier, a screen with the frame and buttons already installed can make this repair considerably easier than transferring everything to a screen without a frame.


Step 16: Transfer the Button Components

Begin transferring the removed components to the new screen frame.

Start by installing the button brackets.

Next, place the button flex cable and plate, then secure them using the two screws.

After tightening the screws, gently fold the flex line and position it on the frame.


Step 17: Install the Speaker

Place the speaker onto the new screen frame.

Make sure it is positioned correctly before continuing with the remaining component transfers.


Step 18: Install the Sensor Flex

Place the sensor flex onto the new frame.

Pay attention to the placement of the cable and make sure it is positioned correctly on the frame.


Step 19: Install the Charging Port Flex

Place the charging port flex onto the new frame and secure it with its screw.

Next, connect the appropriate plug as described in the repair procedure.


Step 20: Secure the Speaker

Secure the speaker in position using its two screws.

Make sure the speaker is properly seated before continuing with the microphone and logic board installation.


Step 21: Install the Microphone Flex

Place the microphone flex onto the replacement frame.

Ensure it is positioned correctly before continuing with the logic board.


Step 22: Install the Logic Board

Place the logic board into the new frame.

Important: Move the cables aside carefully while positioning the board. Avoid putting unnecessary pressure on the cables or connectors.

Once the board is correctly positioned, secure it in place.

Reconnect the seven connector plugs and then reconnect the antenna head to the board.


Step 23: Reinstall the Bracket

Place the bracket back onto the frame.

Secure it using the two screws removed during disassembly.


Step 24: Install the Sensor Gasket and Front Camera

Place the rubber gasket onto the sensor flex.

Next, install the front camera module.

Secure the camera using its two screws and reconnect its three connector plugs.


Step 25: Reinstall the Four-Screw Bracket

Place the bracket back into position and secure it with the four screws removed earlier.

Make sure the bracket is properly positioned before continuing with the battery installation.


Step 26: Install the Battery

Place the battery into the new frame using adhesive.

Make sure it is positioned correctly before continuing with the remaining connections.


Step 27: Reconnect the Sensor Flex and Bracket

Connect the sensor flex to the board.

Then place the bracket over the connection and secure it with the two screws.


Step 28: Reconnect the Battery and Secure the Final Bracket

Secure the battery plug to the board.

Next, place the remaining bracket into position and secure it using the five screws removed earlier.

At this point, the major internal components have been transferred to the new screen frame.


Step 29: Test the Phone Before Closing

Before installing the back cover, power on the Google Pixel 4 and verify its functionality.

Important: Testing the phone before closing the device gives you an opportunity to confirm that the transferred components and new screen are functioning correctly.


Step 30: Prepare the Back Cover Adhesive

Before reinstalling the main back cover, check whether there is enough adhesive remaining.

If the existing adhesive is not sufficient, use B7000 glue or new double-sided back-cover adhesive.


Step 31: Reinstall and Secure the Back Cover

Finally, align the back cover with the phone body and press it into position so the adhesive can bond the cover to the frame.

Use the recommended bonding method from the repair procedure and leave it secured for some time.

If suitable bonding equipment is not available, rubber bands can be used to hold the back cover tightly against the body while the adhesive sets.

End of Repair Guide

The Google Pixel 4 LCD screen replacement is now complete. After the back cover has been secured, power on the phone and verify the display and other basic functions to confirm that the replacement was successful.


Frequently Asked Questions

1. What type of replacement screen is recommended for the Google Pixel 4?

The repair procedure recommends using a replacement screen with the frame and buttons already installed. This can be an original service-pack screen, refurbished or used screen, or aftermarket screen.

2. Can I replace the screen without replacing the frame?

Yes, screens without the frame are available, but the repair procedure notes that transferring the components to a screen without the frame is more difficult and time-consuming.

3. Why does the back cover need to be heated?

The back cover is attached with adhesive. Heating helps soften that adhesive so the cover can be separated using a suction cup and plastic pry tool.

4. Why does the logic board need to be removed?

The phone must be substantially disassembled so that the internal components can be transferred from the original frame to the replacement screen frame.

5. Should I test the phone before reinstalling the back cover?

Yes. The repair procedure recommends powering up the device and verifying its functionality before closing the phone.

6. What can I use if the original back-cover adhesive is not sufficient?

The procedure specifies B7000 glue or new double-sided back-cover adhesive.


Troubleshooting

1. The back cover is difficult to remove. What should I check?

Make sure the adhesive has been heated sufficiently before using the suction cup and plastic pry tool. Work gradually around the cover and be careful with the flash sensor connection.

2. The battery is difficult to remove.

The battery is secured with adhesive. Apply heat to soften the adhesive before carefully working a pry tool underneath the battery.

3. The replacement screen does not work during testing.

Review the connections made during reassembly, particularly the logic board connectors and the components transferred to the new frame.

4. A flex cable is difficult to position on the new frame.

Check the placement of the cable before securing it. The repair requires several flex cables and components to be transferred to the replacement frame, so careful positioning is important.

5. The back cover does not stay attached.

Check whether enough adhesive remains on the back cover. If necessary, use B7000 glue or new double-sided back-cover adhesive and hold the cover securely against the body while the adhesive sets.

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