Difficulty

Moderate

Steps

14

Time Required

                          1 - 2 hours

Sections

10

  • SIM Card Tray
  • 1 step
  • Back Panel
  • 1 step
  • Midframe
  • 1 step
  • Speaker System
  • 1 step
  • Front Cameras
  • 2 steps
  • Headphone Jack
  • 1 step
  • Battery
  • 3 steps
  • Motherboard
  • 2 steps
  • Vibration Motor
  • 1 step
  • Screen
  • 1 step

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Introduction

The LG G8 ThinQ requires disassembly of the entire interior of the device to completely replace the screen.

Before disassembling your device, discharge the battery below 25%.

This phone uses a strong adhesive on the battery and back panel; iFixit’s adhesive remover or high concentration (90% or higher) isopropyl alcohol can be used to make the process easier.

Adhesive can be replaced to closer replicate factory fit and finish.

What you need

Step 1

              SIM Card Tray
  • Unplug and power off your phone before you begin.
  • Insert the SIM card eject tool into the pinhole in the lower right side of the phone.
  • Remove the SIM card and tray.

Unplug and power off your phone before you begin.

Insert the SIM card eject tool into the pinhole in the lower right side of the phone.

Remove the SIM card and tray.

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Step 2

              Back Panel
  • Place the phone so that the screen is facing down.
  • Insert opening cards between the back panel and frame of the phone to loosen the clips and adhesive.
  • Using equal pressure, carefully pry the back panel away from the phone.
  • Once enough space has been created, use an opening tool to completely separate the back panel from the phone.

Place the phone so that the screen is facing down.

Insert opening cards between the back panel and frame of the phone to loosen the clips and adhesive.

Using equal pressure, carefully pry the back panel away from the phone.

Once enough space has been created, use an opening tool to completely separate the back panel from the phone.

Step 3

              Midframe
  • Remove all 14 screws from the midframe using a Phillips #000 screwdriver.
  • Work an opening tool around the perimeter of the midframe to pry and remove it from the phone.

Remove all 14 screws from the midframe using a Phillips #000 screwdriver.

Work an opening tool around the perimeter of the midframe to pry and remove it from the phone.

Step 4

              Speaker System
  • Using an opening tool, carefully pry out remove the speaker system from the phone.

Using an opening tool, carefully pry out remove the speaker system from the phone.

Step 5

              Front Cameras
  • Using an opening tool, carefully disconnect the ribbon cables from both cameras.

Using an opening tool, carefully disconnect the ribbon cables from both cameras.

Step 6

  • Using an opening tool, carefully pry up and remove both cameras from the phone casing.

Using an opening tool, carefully pry up and remove both cameras from the phone casing.

Step 7

              Headphone Jack
  • Using an opening tool, carefully disconnect the ribbon cable connecting the 3.5mm audio jack to the motherboard.
  • Remove the screw holding the 3.5 mm audio jack in place using a Phillips #000 screwdriver.
  • Remove the audio jack from the phone.

Using an opening tool, carefully disconnect the ribbon cable connecting the 3.5mm audio jack to the motherboard.

Remove the screw holding the 3.5 mm audio jack in place using a Phillips #000 screwdriver.

Remove the audio jack from the phone.

Step 8

              Battery
  • Flip phone so that screen is facing up.
  • Using a heating pad, hairdryer, or heat gun, apply heat to loosen the adhesive beneath the battery.
  • Be careful to not overheat the phone; the screen and battery are susceptible to damage.
  • The adhesive can be difficult to soften; it may take many attempts.

Flip phone so that screen is facing up.

Using a heating pad, hairdryer, or heat gun, apply heat to loosen the adhesive beneath the battery.

Be careful to not overheat the phone; the screen and battery are susceptible to damage.

The adhesive can be difficult to soften; it may take many attempts.

Step 9

  • Using an opening tool, carefully pry up the ribbon cable to disconnect the battery.

Using an opening tool, carefully pry up the ribbon cable to disconnect the battery.

Step 10

  • Using opening cards or an opening tool, carefully pry around the edges of the battery.
  • If you have trouble prying up the battery, the adhesive may not be loose enough. Re-apply heat, or use some isopropyl alcohol under the battery, allowing it to penetrate for several minutes to weaken the adhesive.
  • Remove the battery from the phone.

Using opening cards or an opening tool, carefully pry around the edges of the battery.

If you have trouble prying up the battery, the adhesive may not be loose enough. Re-apply heat, or use some isopropyl alcohol under the battery, allowing it to penetrate for several minutes to weaken the adhesive.

Remove the battery from the phone.

Step 11

              Motherboard
  • Use an opening tool to disconnect the two coaxial cables from the motherboard.

Use an opening tool to disconnect the two coaxial cables from the motherboard.

Step 12

  • Using an opening tool, carefully disconnect the screen ribbon cable from the motherboard.
  • Using an opening tool, carefully pry up the motherboard from the frame and remove it from the phone.

Using an opening tool, carefully disconnect the screen ribbon cable from the motherboard.

Using an opening tool, carefully pry up the motherboard from the frame and remove it from the phone.

Step 13

              Vibration Motor
  • Remove the vibration motor from the phone casing using an opening tool.
  • Heat the vibration motor from the other side of the phone to loosen adhesive if needed.

Remove the vibration motor from the phone casing using an opening tool.

Heat the vibration motor from the other side of the phone to loosen adhesive if needed.

Step 14

              Screen
  • Using a plastic spudger, carefully pry up and remove the charging daughter board from the case.
  • Reinstall removed components onto new phone casing and screen.

Using a plastic spudger, carefully pry up and remove the charging daughter board from the case.

Reinstall removed components onto new phone casing and screen.

To reassemble your device, follow these instructions in reverse order, installing the components on your new screen.

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                    Josh Cress

Member since: 09/17/2021

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                                            5 Guides authored

Jane Walsh - Sep 2, 2022

Reply

I did not do this myself, but I now see the labor involved, in addition to the rarity of LG phones. Meaning, I understand why it costs what it does for a professional to do this.

Jo Payne - Dec 25, 2022

Reply

Hi. I had my screen replaced a few months back. It was repaired by a friend who has been working in the repair industry for most of the past decade. However, the under screen fingerprint scanner no long functions. What is causing this, and how can I fix it? Thanks