Teardown difficulty:
Moderate
Duration:
9 min

Recommended tools

Disassembly/Repair of the mobile device Xiaomi Redmi 7 (Xiaomi Redmi 7 M1810F6LG) with each step description and the required set of tools.


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How to disassemble Xiaomi Redmi 7, Step 1/1 How to disassemble Xiaomi Redmi 7, 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 Redmi 7, Step 2/1 How to disassemble Xiaomi Redmi 7, 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 Redmi 7, Step 3/1 How to disassemble Xiaomi Redmi 7, Step 3/2

Step 3. Unscrew the screws

Using a screwdriver (Phillips 1.5 mm PH000), unscrew nine screws.


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Step 4. Open the cover

Pry over the edges. Move an opening tool along the edge detach the clips and remove the cover with an earpiece speaker contact pad.

⚠️️ Be careful with the fingerprint sensor cable!


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Step 5. Disconnect the connector

Pry up the fingerprint sensor connector and remove the cover.


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Step 6. 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 Redmi 7 model has a battery BN46 with 4000 mAh capacity (aka rechargeable battery).

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


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Step 7. Unscrew the screws

Using a screwdriver (Phillips 1.5 mm PH000), unscrew the six screws.


How to disassemble Xiaomi Redmi 7, Step 8/1 How to disassemble Xiaomi Redmi 7, Step 8/2

Step 8. Unscrew the screws

Using a screwdriver (Phillips 1.5 mm PH000), unscrew the two short screws.


How to disassemble Xiaomi Redmi 7, Step 9/1 How to disassemble Xiaomi Redmi 7, Step 9/2

Step 9. Remove the loudspeaker

Pry over the edge and remove the loudspeaker assembly with antennas.


How to disassemble Xiaomi Redmi 7, Step 10/1 How to disassemble Xiaomi Redmi 7, Step 10/2

Step 10. Unscrew one screw

Using a screwdriver (Phillips 1.5 mm PH000), unscrew one screw securing the sub-board.


How to disassemble Xiaomi Redmi 7, Step 11/1

Step 11. Disconnect the connectors

Disconnect the coaxial cable connector, inter-board cable.

⚠️️ 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, spring contacts for the speaker, vibration motor, and an antenna unit.

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


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Step 13. Remove the inter-board cable

Carefully, preferably from the edge, disconnect the connector and remove the inter-board cable connecting the mainboard to the daughterboard (also known as the sub-board).

⚠️️ 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.

ℹ️️ An arrow on the FFC cable (flexible flat cable) indicates its correct position.


How to disassemble Xiaomi Redmi 7, Step 14/1 How to disassemble Xiaomi Redmi 7, Step 14/2

Step 14. Remove the front camera

To disconnect this connector we have to partially peel off the copper film (part of passive heat sink), and remove the front (selfie) camera.


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Step 15. Unscrew one screw

Using a screwdriver (Phillips 1.5 mm PH000), unscrew one screw securing the motherboard.


How to disassemble Xiaomi Redmi 7, Step 16/1

Step 16. Disconnect the connectors

Pry up the connector of the display module cable, 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.


How to disassemble Xiaomi Redmi 7, Step 18/1 How to disassemble Xiaomi Redmi 7, Step 18/2

Step 18. Remove the cameras

Pry connectors on the motherboard, and remove the two rear cameras.

Detailed disassembly instructions of Xiaomi Redmi 7 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 9 minutes in time. Our manual is suitable for all models Xiaomi Redmi 7 — Xiaomi Redmi 7 M1810F6LG released for markets in different countries.



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