Disassembly/Repair of the mobile device Xiaomi POCO M3 (Xiaomi POCO M3 M2010J19CG) with each step description and the required set of tools.

⚠️ Before disassembling, do not forget to turn your phone off.

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.

Using a spudger or a plastic pick, carefully, around the edge, detach the back cover clips, and remove it.

Do not insert the tool deeply or bend it. Otherwise, the housing may be tampered with or damaged.

⚠️ Be careful when opening the cover from the volume and power buttons side. Thin cable and fragile buttons are straightforward to damage.

⚠️ Pay attention to the fingerprint sensor cable.

⚠️ Before! It is not necessary to remove the fingerprint sensor. You can choose another option to do:

1 - unscrew upper screws; Step 5

2 - remove the cover securing the motherboard; Step 6

3 - disconnect the fingerprint sensor connector; Step 8

4 - remove the back cover with the fingerprint sensor.

or

Carefully remove the fingerprint sensor from the side of the back cover as depicted in the photos.

Using a screwdriver (Phillips 1.5 mm PH000), unscrew 10 screws.

Remove the cover with antennas that protect cameras and printed circuit board (PCB). Try to lift the covers by the edges and not push anything between them to not accidentally touch or short-circuit anything on the PCB.

Disconnect the battery connector as soon as possible.

ℹ️️ The Xiaomi Poco M3 M2010J19CG model has a battery BN62 with 6000 mAh capacity (aka rechargeable battery).

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

Also, try not to use a metal tool to disconnect the rechargeable battery connector or do it carefully.

Disconnect the connector and remove the cable with the fingerprint sensor.

Using a screwdriver (Phillips 1.5 mm PH000), unscrew 7 screws.

Remove the loudspeaker assembly with antennas.

Disconnect the coaxial cable connector, cable to the mainboard, on the daughterboard.

⚠️ 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).

Remove the sub-board. It is glued to the frame with metalized tape, so to facilitate the process, the board can be heated a bit.

ℹ️️ The 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 under the board when removing the sub-board. Internal components could be damaged.

Pry up the connectors. After that, remove two rear cameras and one front (selfie) camera.

Pry up the connectors 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.

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

⚠️ 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.

Disconnect the connector and remove one rear camera.