Disassembly/Repair of the mobile device Samsung Galaxy A36 SM-A366 (Samsung Galaxy A36 SM-A366E, SM-A366E/DS, SM-A366B, SM-A366B/DS, SM-A366U, SM-A366U1) with each step description and the required set of tools.

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

First, we need to remove the SIM card tray. For that, we’ll use a special tool.

Carefully insert the tool into the small hole and push the tray out.

If it’s stuck or hard to remove, you can use tweezers to help pull it out.

Next, we’ll heat the back cover to about 70°C (or 160°F). We’re using a heating mat for this, but you can also use a hair dryer.

After about 5 to 7 minutes of heating, we can start removing the back cover. To do this, we’ll use a thin plastic film — this could be a film from stationery store or even a screen protector film.

Gently slide the sheet along the edge to cut through the adhesive underneath.

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

Also, don’t push the film in too deep — we don’t want to accidentally hit any ribbon cables inside the phone.

Once the adhesive is loosened, we can carefully lift and open the back cover. As you can see, there’s nothing attached to the inside of the cover.

Now it’s a good idea to protect the camera lenses. We use a special protective film for this.

Make sure to stick the film only to the rims — not directly on the lenses themselves.

Next, we’ll remove the screws. Use a 1.5 mm Phillips screwdriver (or a #000 Phillips).

Carefully unscrew all the screws and place them on a special magnetic pad or tray, just in case.

Once the screws are out, we’ll detach the top internal cover that includes the antenna tracks/or lines. Use a non-metallic tool to gently pry it off.

There’s a speaker mounted on this cover, by the way.

After that, use the same non-metallic tool to disconnect the battery connector.

ℹ️️ The Samsung Galaxy A36 SM-A366 model has a battery EB-BA566ABY with a capacity of 5000 mAh (also known as a rechargeable battery).

Now we’ll move on to the screws at the bottom section.

Again, use the same 1.5 mm Phillips screwdriver. If the screws are hard to remove, we can use a magnetizer, tweezers, or both to help get them out.

Once the screws are removed, we’ll carefully detach the bottom internal cover. Lift it gently — it also has a loudspeaker attached.

Now, we’ll disconnect the connectors on the sub-board: the interconnect ribbon cable and the antenna cable.

Then, do the same on the motherboard side — disconnect and move all the cables aside.

Next, we need to disconnect the fingerprint sensor connector.

And we remove the two screws on the sub-board.

It's best to keep these screws separate from the previous ones — just in case.

Also, remember the placement of each screw on the sub-board so you don’t mix them up during reassembly.

Carefully remove the sub-board. We could notice it sits slightly recessed.

On this sub-board, we have the charging port, microphone, and the SIM card tray connector on the backside.

Up here, we can usually only disconnect one rear camera and the front-facing camera.

It’s a good idea to remove the front camera and cover the lens to keep dust out.

Then, we remove the one screw holding the motherboard in place.

Again, use the same 1.5 mm Phillips screwdriver, and keep this screw separate — it’s different from the others.

Carefully remove the printed circuit board. There is no need to use a lever or try to reach the circuit board by force. Make sure that nothing is getting in the way or holding the circuit board.

The motherboard, also, may be attached with attachments like latches or hooks, be careful.

⚠️️ 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.

We flip the motherboard over and disconnect the rear cameras.

Now we can set the motherboard and cameras aside and move on to removing the battery.

In the 2025 Galaxy series, the battery is held in place with transparent pull tabs. Peel them off carefully and fold them to the side. Then gently lift the battery out.

By the way, the battery is not glued down on the bottom or the back.

Be extra cautious with the battery connector cable. Make sure it doesn’t get stuck to one of the transparent pull tabs — otherwise, when you pull the battery out, it could tear the cable. Unfortunately, that does happen sometimes.

Carefully peel the tabs and remove the battery.

ℹ️️ In the display frame remained: the fingerprint sensor and side buttons.