⚠️ Before disassembling, do not forget to turn your phone off.
Disassembly of the mobile device vivo Y12 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.
ℹ️️ Remember the location for the SIM and Memory card (Micro SD) trays so that nothing is confused when reassembling.
⚠️ 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
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.
⚠️ Look in advance in the picture for the cables’ location for inter-board, touchscreen, display, buttons (if any) under the cover to not damage them accidentally.
⚠️ Pay attention to the fingerprint sensor cable glued to the back cover from the inside.
Step 4. Unscrew one screw
Using a screwdriver (Phillips 1.5 mm PH000), unscrew one screw and remove the bracket securing the fingerprint sensor connector.
Step 5. Disconnect the fingerprint sensor
Disconnect the fingerprint sensor connector and remove the cover.
Step 6. Unscrew the screws
Using a screwdriver (Phillips 1.5 mm PH000), unscrew 7 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 part. 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 7. Open the cover
Remove the cover with antennas that protect 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.
ℹ️️ On the upper cover, you can see the metalized coating on the plastic in the form of tracks and contact pads. These are Wi-Fi, Bluetooth, and GPS antennas.
⚠️ It is crucial while reassembling, checking the spring contacts on the board, and the contact pads on the cover match and touch. Otherwise, signal loss or signal may be quite weak.
Step 8. Disconnect the battery connector
Disconnect the battery connector as soon as possible.
ℹ️️ The vivo Y12 model has a battery B-G7 with 5000 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 8 screws.
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 part. 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 and 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, headphone jack socket, 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 13. Disconnect the connectors
Pry up the connectors of power volume buttons cable, display module cable, inter-board cable, and coaxial cable.
Also, disconnect the connectors and remove all cameras.
⚠️ 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 14. Unscrew the screws
Using a screwdriver (Phillips 1.5 mm PH000), unscrew two screws securing the motherboard.
Step 15. Remove the mainboard
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 16. In the display frame remained
In the display frame remained: the earpiece speaker, battery, and coaxial cable.
Detailed disassembly instructions of vivo Y12 in the video, made by our mobile repair & service center:
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