Doing a full teardown of the OnePlus 8T gives you complete access to every component, including cameras, logic board, speakers, flex cables, battery, and more. Whether you’re repairing a component, diagnosing internal damage, or simply learning how the device is built, this guide walks you through every stage of disassembly in a safe and beginner-friendly way.

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Repair Overview

Device Type: Smartphone
Repair Type: Internal Battery Replacement

Repair Difficulty : ★★★★★☆☆☆☆☆ (5/10 – Moderate)

Estimated Time: 60–90 minutes

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Reasons You May Need a Full Teardown

A complete teardown is useful for:

• Replacing the battery
• Replacing the screen
• Repairing a charging port
• Fixing antenna issues
• Replacing front or rear cameras
• Diagnosing liquid damage
• Cleaning debris from speakers or sensors
• Inspecting motherboard components

Before You Begin

Compatibility and Model Numbers

• Oneplus 8T
• Oneplus 8T+ 5G

This repair guide based on OnePlus 8T

Model Numbers | KB2001, KB2000, KB2003, KB2005, KB2007

Tools Required

• Mobile phone heating pad or hairdryer/heat gun
• Plastic pry tool / card pry
• Suction cups
• Phillips #00/#000 screwdrivers
• Torx T3 / T4 Screwdriver
• Flathead Screwdriver
• Tweezers (for connectors)
• B7000 glue or double-sided adhesive (for back cover)
• Rubber bands or bonding clips to secure the back cover

Using proper tools reduces the risk of damaging the phone.

How to Find Tools and Parts

• Heating pad – https://amzn.to/3H0tHzJ
• Portable Heat Gun – https://amzn.to/4mszih1
• Clamps https://amzn.to/3GYJT4w
• STREBITO 142 Piece Repair Tool Kit https://amzn.to/3UO1jUx
• Glue | Adhesive https://amzn.to/46exVxe
• Compatible Parts –
  • Battery – https://amzn.to/3IgZ75c
  • Screen – https://amzn.to/46iYhNy
  • Other Parts – https://amzn.to/47Hh2N3
• Silicone Work Repair Mat https://amzn.to/45Emz5l

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Protect Your Oneplus 8T

Protector For The Screen https://amzn.to/4nXZi55
Best Rated Case https://amzn.to/46acCf2

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Step-by-Step OnePlus 8T Teardown Guide

Step 1: Open the OnePlus 8T

Start by powering off the phone and removing the SIM tray.
Heat the back cover edges gently to soften the adhesive. Use a suction cup to create a gap, then insert a plastic card to separate the back cover from the frame.

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Step 2: Remove the Back Cover

Work around all edges until the adhesive is fully released.
Lift the back cover away from the frame carefully to avoid cracking the glass.

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Step 3: Remove the Logic Board Frame

Remove all Phillips screws securing the upper mainboard bracket.
Lift the frame using a plastic pry tool, exposing the logic board, camera modules, and connectors.

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Step 4: Detach and Remove Rear Cameras

Disconnect the rear camera modules from the board.
Gently lift them out; they are individually plugged into the motherboard.

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Step 5: Remove the Front Camera

Unplug the front camera connector and lift the module out of its slot.

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Step 6: Disconnect Flex Cables & Antennas

Detach all visible flex cables:

• Button flex
• Display flex
• Battery flex (do not remove battery yet)
• Main flex
  Disconnect antenna lines running across the board.

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Step 7: Remove the Logic Board

With all cables detached, gently lift the logic board out of the frame.
Be careful — sensors and delicate components sit flush beneath it.

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Step 8: Remove Ear Speaker & Sensors

Unclip and lift the ear speaker assembly.
Remove the accompanying top sensors that are clipped into the frame.

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Step 9: Remove the Bottom PCB Protective Cover

Unscrew and lift the plastic protective shield covering the sub-board, charging port, and antennas.

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Step 10: Remove Main Flex, Secondary SIM Board & Antennas

Disconnect:

• Main flex cable
• SIM secondary board flex
• Both antenna cables
  Remove each component carefully from the bottom frame.

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Step 11: Remove the Taptic Engine

Unscrew and pry up the vibration motor assembly located at the bottom right.

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Step 12: Remove the Battery

Peel the battery’s pull tabs and gently lift the cell out.
The battery is glued but removable with steady even pressure.

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Step 13: Remove LCD Flex

Disconnect and free the LCD flex cable running under the mid-frame.

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Step 14: Remove Power & Volume Flex + Buttons

Peel off:

• Power key flex
• Volume key flex
  Remove their respective metal button supports from the frame.

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Frequently Asked Questions (FAQ)

1. Can I reassemble the device following the same steps backward?

Yes. Reassembly is simply the teardown steps in reverse order.

2. Do I need new adhesive for the back cover?

Yes. Use B7000 glue or pre-cut back cover adhesive.

3. Will doing a teardown void warranty?

Yes. Opening the phone voids manufacturer warranty.

4. Do I need to disconnect the battery before removing other components?

Yes. Always unplug the battery before unplugging any flex cable.

5. Are the cameras plug-and-play?

Yes. Each camera module uses a simple connector and lifts out easily.

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Troubleshooting After Reassembly

1. The phone won’t turn on.

Check battery connector seating; ensure no cable is pinched during assembly.

2. No speaker sound after repair.

Ensure the ear speaker and lower speaker contacts are pressed firmly into place.

3. No signal or weak signal.

Confirm all antenna lines are fully clicked in on both ends.

4. Camera not functioning.

One camera connector not seated properly can disable the entire camera system.

5. Screen showing lines or flickering.

LCD flex may not be inserted fully into the motherboard.

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A teardown of the OnePlus 8T is a moderate-level procedure that can help you better understand the device’s internal components. With patience, proper tools, and careful handling, you can complete this teardown successfully at home.

If you found this guide helpful, feel free to explore more repair tutorials to keep your devices running like new.

Related Guides

• More Oneplus 8T Repair Guides
• Onplus 8 Pro Repair Guides
• Oneplus 8 Repair Guides