Teardown difficulty:
Moderate
Duration:
8 min

Recommended tools

Disassembly/Repair of the mobile device Xiaomi Mi 8 Lite (Xiaomi Mi 8 Lite M1808D2TG) with each step description and the required set of tools.


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How to disassemble Xiaomi Mi 8 Lite, Step 1/1 How to disassemble Xiaomi Mi 8 Lite, Step 1/2

Step 1. Remove the tray

Use the ejection tool (aka Needle) or Paperclip. Push the tip all the way into the hole until the tray ejects, and then pull the tray of SIM and Memory card (Micro SD) out.

⚠️️ Pay attention! The tool must be inserted into a hole on the edge of the phone's housing. Do not press too hard. It may break the tray eject mechanism.


How to disassemble Xiaomi Mi 8 Lite, Step 2/1 How to disassemble Xiaomi Mi 8 Lite, Step 2/2

Step 2. Open the back cover

We recommend using a special heating device such as a separator machine, heat gun, or heating mat. It will simplify the process. You can use a home hairdryer, but you will have to make a nozzle by hand or have a suitable one in the kit to gently heat and concentrate the heat flow in the right place.

ℹ️️ The surface of the back cover must be heated to soften the adhesive underneath. The approximate heating temperature is 50° C / 125° F.

Use a thin plastic film or pick for separation. To facilitate the process, you can use isopropyl alcohol. It is often the most difficult to pass the tool between the parts to be divided. Choose the far edge from the FFC cables or buttons.

Do not use a lever or any force for separation that could damage the elements inside.

⚠️️ Pay attention to the fingerprint sensor cable! The cable connects the fingerprint sensor on the back cover to the motherboard.


How to disassemble Xiaomi Mi 8 Lite, Step 3/1 How to disassemble Xiaomi Mi 8 Lite, Step 3/2

Step 3. Disconnect the connector

Pry up the fingerprint sensor cable connector and remove the back cover.


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Step 4. Unscrew the screws

Using a screwdriver (Phillips 1.5 mm PH #000), unscrew the four long screws.


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Step 5. Unscrew the screws

Using a screwdriver (Phillips 1.5 mm PH #000), unscrew the five silver short screws.


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Step 6. Open the cover

Pry over the edges. Move an opening tool along the edge detach the clips and remove the cover with antenna pads and tracks, and an NFC tag.


How to disassemble Xiaomi Mi 8 Lite, Step 7/1

Step 7. Disconnect the battery connector

Disconnect the battery connector as soon as possible. It is better to use a non-metal or plastic tool to avoid any damage.

ℹ️️ The Xiaomi Mi 8 Lite model has a battery BM3J with 3250 mAh capacity (aka rechargeable battery).

⚠️️ It is highly recommended to disconnect the connector to avoid possible short circuits during disassembly.


How to disassemble Xiaomi Mi 8 Lite, Step 8/1

Step 8. Unscrew the screws

Using a screwdriver (Phillips 1.5 mm PH #000), unscrew the eight screws.


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Step 9. Remove the loudspeaker

Pry over the edge and remove the loudspeaker assembly with antenna tracks.


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Step 10. Unscrew one screw

Using a screwdriver (Philips 1.5 mm PH #000), unscrew one screw securing the sub-board.


How to disassemble Xiaomi Mi 8 Lite, Step 11/1 How to disassemble Xiaomi Mi 8 Lite, Step 11/2

Step 11. Disconnect the connectors

Disconnect the coaxial cable connector, inter-board cable connector.

⚠️️ Do not pull on the cable or pry it with a sharp tool, the connectors are pretty weak and break easily, or the cable falls out of the end (lug).


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Step 12. Remove the daughterboard

Remove the sub-board. It may be glued to the frame or attached with attachments like latches or hooks, so be careful.

ℹ️️ The sub-board contains a charging port (Micro-USB), microphone, vibration motor, spring contacts for the speaker, and an antenna unit.

⚠️️ It is not necessary to insert the tool underneath when removing the sub-board. Internal components could be damaged.


How to disassemble Xiaomi Mi 8 Lite, Step 13/1 How to disassemble Xiaomi Mi 8 Lite, Step 13/2

Step 13. Unscrew one screw

Using a screwdriver (Philips 1.5 mm PH #000), unscrew one screw securing the cameras cover.


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Step 14. Open the cover

Pry over the edge and detach the cameras cover.


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Step 15. Unscrew the screws

Using a screwdriver (Philips 1.5 mm PH #000), unscrew the two screws securing the motherboard.


How to disassemble Xiaomi Mi 8 Lite, Step 16/1

Step 16. Disconnect the connectors

Pry up the connectors of the display module cable, inter-board cable, and coaxial cable.

⚠️️ Be careful when removing the cables from the connectors, the cables are pretty thin, and it is easy enough to break them or damage the contact tracks inside.


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Step 17. Remove the motherboard

Carefully remove the printed circuit board. There is no need to use a lever or try to reach the circuit board by force. Make sure that nothing is getting in the way or holding the circuit board.

The motherboard, also, may be attached with attachments like latches or hooks, be careful.

⚠️️ Do not bend the circuit board when removing it or push tools under it. Unbeknownst to yourself, you can damage components or cables from the inside.


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Step 18. Remove the cameras

Pry up the connectors and remove the assembly of the two rear cameras.


How to disassemble Xiaomi Mi 8 Lite, Step 19/1 How to disassemble Xiaomi Mi 8 Lite, Step 19/2

Step 19. Remove the front camera

Disconnect the connector on the motherboard, and remove the front (selfie) camera.


How to disassemble Xiaomi Mi 8 Lite, Step 20/1 How to disassemble Xiaomi Mi 8 Lite, Step 20/2 How to disassemble Xiaomi Mi 8 Lite, Step 20/3

Step 20. In the display frame remained

ℹ️️ In the display frame remained: the earpiece speaker, battery, coaxial cable, and vibration motor.

Detailed disassembly instructions of Xiaomi Mi 8 Lite in the video, made by our mobile repair & service center:

If you have a question, ask us, and we will try to answer in as much detail as possible. If this article was helpful for you, please rate it.


Disassembling\Repair has medium complexity and takes about 8 minutes in time. Our manual is suitable for all models Xiaomi Mi 8 Lite — Xiaomi Mi 8 Lite M1808D2TG released for markets in different countries.



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