Disassembly/Repair of the mobile device Samsung Galaxy J4 SM-J400 (Samsung Galaxy J4 J400F/DS (Global DS); J400G/DS) with each step description and the required set of tools.

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Vadim Popoff

Vadim Popoff

Content manager / Author / Content specialist

Content specialist with over 10 years of experience in the technology industry.

Open the back cover

Step 1.

Open the back cover

Open the back cover.

Remove the battery

Step 2.

Remove the battery

Lift and remove the battery.

Unscrew the screws

Step 3.

Unscrew the screws

Using a screwdriver (Phillips 1.5 mm PH000), unscrew 11 bolts in the frame of the phone.

Open the cover

Step 4.

Open the cover

Remove the cover hiding the connector.

Disconnect the connector

Step 5.

Disconnect the connector

Pry up the display module connector.

Open the display

Step 6.

Open the display

Separate the display module from the cover.

âš  Warning!

For careful separation, we recommend using a heat gun. At the same time, it is necessary to heat carefully in order, not to damage the surface of the device.

Open the mid-frame

Step 7.

Open the mid-frame

Pry and remove the middle frame.

Remove the front camera

Step 8.

Remove the front camera

Disconnect the connector on PCB, and remove the front (selfie) camera.

Disconnect the connector

Step 9.

Disconnect the connector

Disconnect the connector on the PCB.

Unscrew the screws

Step 10.

Unscrew the screws

Using a screwdriver (Phillips 1.5 mm PH000), unscrew 2 bolts in the PCB.

Remove the motherboard

Step 11.

Remove the motherboard

Remove the PCB.

In the display frame remained

Step 12.

In the display frame remained

Parts are in the frame of the display module.

Evgenii Kuzmin

Evgenii Kuzmin

Senior maintenance service and repair engineer

Disassembling\Repair has medium complexity and takes about 16 minutes in time.
Our manual is suitable for all models Samsung Galaxy J4 SM-J400 — Samsung Galaxy J4 J400F/DS (Global DS); J400G/DS released for markets in different countries.

Detailed disassembly instructions of Samsung Galaxy J4 SM-J400 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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