Disassembly/Repair of the mobile device Xiaomi Redmi 9C (Xiaomi Redmi 9C M2006C3MNG) 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.

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

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

⚠️ Pay attention to the fingerprint sensor cable.

Pry up the fingerprint sensor connector and remove the cover.

Using a screwdriver (Phillips 1.5 mm PH000), unscrew 11 screws.

Remove the cover with antennas that protects the 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 Redmi 9C M2006C3MNG model has a battery BN56 with 4900 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.

Carefully remove the bracket securing the display module connector.

Using a screwdriver (Phillips 1.5 mm PH000), unscrew 8 screws.

Remove the loudspeaker assembly with antennas.

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

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 sub-board can be heated a bit.

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.

Carefully remove the battery.

With extreme care, remove the battery because it is glued from the inside by the manufacturer.

Pry up connectors and remove the rear and front (selfie) cameras.

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.

Pry up the connector and remove the rear camera.