⚠️ Before disassembling, do not forget to turn your phone off.
Disassembly/Repair of the mobile device Doogee BL12000 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. Unscrew the screws
Using a screwdriver (Phillips 1.5 mm PH000), unscrew four screws on the sides of the phone.
Step 4. Open the back cover
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.
Step 7. Disconnect the battery connector
Disconnect the battery connector as soon as possible.
ℹ️️ The Doogee BL12000 model has a battery BL12000 with 12000 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 eight screws securing the battery.
Step 11. Remove the protective film
Remove the protective film. Be careful because there are two cables underneath.
Step 12. Unscrew the screws
Using a screwdriver (Phillips 1.5 mm PH000), unscrew the six screws.
If the screws are different: 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 13. Remove the loudspeaker
Turn over the loudspeaker assembly connected with the sub-board with two wires.
Step 14. Disconnect the connectors
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).
Step 15. Remove the daughterboard
Remove the sub-board wired with a vibration motor so remove it too. They are 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, 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 17. Unscrew the screws
Using a screwdriver (Phillips 1.5 mm PH000), unscrew two screws on the motherboard.
Step 18. Disconnect the connectors
Pry up the connectors of power volume buttons cable, 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.
Step 19. 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.
Detailed disassembly instructions of Doogee BL12000 in the video, made by our mobile repair & service center:
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