Disassembly/Repair of the mobile device Samsung Galaxy A55 SM-A556 (Samsung Galaxy A55 SM-A556V, SM-A556B, SM-A556B/DS, SM-A556E, SM-A556E/DS, SM-A5560) with each step description and the required set of tools.

⚠️ Before disassembling, do not forget to turn your phone off.

First, as usual, we need to remove the SIM card tray. For this, we use the SIM ejector tool.

Insert it into the hole and gently push out the tray, which is located at the top.

Next, we need to heat the back cover surface to around 70 degrees Celsius or 160 degrees Fahrenheit. We use a heating mat for this, but you can also use a hairdryer.

And after 5 to 7 minutes, we can move on to detaching the back cover.

To detach the back cover, we use a thin plastic film. This film can be the protective film from a new display or film from a stationery store. Carefully insert it into the gap between the back cover and the mid-frame, then gently slide it along the edge to cut through the adhesive.

As always, be extra careful around the camera area to avoid accidentally touching the lenses.

Now it's best to cover the camera lenses. For this, we use a special protective film.

Please note that the film is applied not directly to the lens glass, but to the rim surrounding the camera module.

We move on to unscrewing the nine top screws. For this, we use a 1.5mm cross-head screwdriver or a Phillips #000.

It's best to place the screws on a special surface in a specific order, just in case.

So, after removing the screws, use a non-metallic tool to pry off the top cover.

Why non-metallic? To avoid short-circuiting anything on the motherboard.

We also use a non-metallic tool to disconnect the battery connector.

ℹ️ Samsung Galaxy A55 SM-A556 model has a battery EB-BA546ABY with a capacity of 4905 mAh (also known as a rechargeable battery).

We move on to unscrewing the screws in the bottom section. For this, we also use a 1.5mm cross-head screwdriver (PH #000).

It’s best to keep these screws separate from the previous ones.

After removing the screws, we can detach the bottom cover along with the speaker.

Carefully pry it up at the designated spot, lift gently, and remove the cover that contains the speaker.

Next, we disconnect the antenna and the inter-board flex cable connectors.

Disconnect all connectors and move the inter-board cables aside.

⚠️ 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.

ℹ️ An arrow on the FFC cable (flexible flat cable) indicates its correct position.

We disconnect the fingerprint sensor cable connector on the sub-board.

Next, we unscrew the two screws securing the sub-board.

These screws are different from the previous ones—they’re smaller and black. Be sure to keep them separate from the others.

Now we can remove the sub-board. Lift it gently, slide it out, and take care not to damage the fingerprint sensor flex cable.

The sub-board contains the charging port, microphone, and other components on its reverse side.

Now, moving to the top section: here we can disconnect the front-facing camera and the small rear camera. Detach them carefully.

It’s also a good idea to cover the front camera lens to prevent dust from settling on it. Then, set the cameras aside.

The connectors for the other rear cameras are standard for this series — located on the back side. We will disconnect those later.

Now, remove the single screw securing the motherboard. Use a 1.5mm Phillips screwdriver for this.

Now, carefully detach the motherboard. Lift it gently at the designated spots, remove it, and then flip it over.

⚠️ 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.

Gently disconnect the rear cameras and set them aside.

Finally, we move on to disconnecting the battery.

As is typical for this year’s series, there’s a blue tab that needs to be pulled up, and two transparent tabs on the edges that should be turned fully to the sides to keep them out of the way.

Carefully turn the edge tabs aside, then pull up the blue tab in the middle to disconnect the battery.

ℹ️ In the display frame remained: the earpiece speaker, vibration motor, side buttons.