⚠️ Before disassembling, do not forget to turn your phone off.
Disassembly/Repair of the mobile device Oppo A9 with each step description and the required set of tools.
Step 2. Remove the tray
Use the Key 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.
Step 3. 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 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.
Do not let the liquid get inside the smartphone.
The process can be seen in our video entirely so as well as in detail, at the end of the instructions.
⚠️ Pay attention to the fingerprint sensor glued to the back cover from the inside.
Step 4. Remove the bracket
Using a screwdriver (Phillips 1.5 mm PH000), unscrew the one screw and remove the bracket holding the fingerprint sensor connector.
Step 8. Disconnect the battery connector
Disconnect the battery connector as soon as possible.
ℹ️️ The OPPO A9 (2020) CPH1941 model has a battery BLP709 with 4020 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.
Step 9. Unscrew the screws
Using a screwdriver (Phillips 1.5 mm PH000), unscrew the three screws.
ℹ️️ Be sure to note the location of the screws before disassembling. When assembling the device, screwing the screw in the wrong place may damage the device or its parts. To avoid damage, the removed screws and individual pieces (as gaskets or brackets) must be laid out in the appropriate order, or the screws and their holes in the phone must be marked with colored markers.
Step 11. Disconnect the connectors
Disconnect the coaxial cable connector, inter-board sub-screen cable 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).
Step 12. Remove the daughterboard
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.
Step 13. Remove the cameras
Disconnect the connectors and remove two rear cameras and one front (selfie) camera.
Step 14. Unscrew one screw
Using a screwdriver (Phillips 1.5 mm PH000), unscrew one screw securing the motherboard.
Step 15. Disconnect the connectors
Pry up the connectors of the display module cable, two inter-board cables, and a 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.
Step 16. Remove the motherboard
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.
Step 17. In the display frame remained
ℹ️️ In the display frame remained: the earpiece speaker, battery, coaxial cable, and vibration motor.
Detailed disassembly instructions of Oppo A9 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.
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