Teardown difficulty:
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Disassembly/Repair of the mobile device Samsung Galaxy A7 (2018) SM-A750 with each step description and the required set of tools.


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How to disassemble Samsung Galaxy A7 (2018) SM-A750, Step 1/1 How to disassemble Samsung Galaxy A7 (2018) SM-A750, Step 1/2

Step 1. Remove the tray

Use the ejection 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.


How to disassemble Samsung Galaxy A7 (2018) SM-A750, Step 2/1 How to disassemble Samsung Galaxy A7 (2018) SM-A750, Step 2/2

Step 2. Open the back cover

We recommend using a special heating device such as a separator machine, heat gun, or heating mat. It will simplify the process. You can use a home hairdryer, but you will have to make a nozzle by hand or have a suitable one in the kit to gently heat and concentrate the heat flow in the right place.

ℹ️️ The surface of the back cover must be heated to soften the adhesive underneath. The approximate heating temperature is 50° C / 125° F.

Use a thin plastic film or pick for separation. To facilitate the process, you can use isopropyl alcohol. It is often the most difficult to pass the tool between the parts to be divided. Choose the far edge from the FFC cables or buttons.

Do not use a lever or any force for separation that could damage the elements inside.


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Step 3. Unscrew the screws

Using a screwdriver Phillips 1.5 mm PH #000, unscrew 15 screws.


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Step 4. Open the middle cover

Pry over the edges. Move an opening tool along the edge detach the clips and remove the middle cover with a fingerprint sensor (including Home button) and antenna pads and tracks. The middle cover protects the printed circuit board (PCB).

Try to lift the cover by the edges and don't push anything too far inside, so as not to accidentally break or short-circuit anything on the circuit board.


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Step 5. Open the cover

Pry at the edge and remove the cover hiding the sub-board.


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Step 6. Disconnect the battery connector

Disconnect the battery connector as soon as possible. It is better to use a non-metal or plastic tool to avoid any damage.

ℹ️️ The Samsung Galaxy A7 (2018) model has a battery EB-BA750ABU with 3300 mAh capacity (aka rechargeable battery).

⚠️️ It is highly recommended to disconnect the connector to avoid possible short circuits during disassembly.


How to disassemble Samsung Galaxy A7 (2018) SM-A750, Step 7/1 How to disassemble Samsung Galaxy A7 (2018) SM-A750, Step 7/2 How to disassemble Samsung Galaxy A7 (2018) SM-A750, Step 7/3

Step 7. Remove the inter-board cable

Carefully, preferably from the edge, disconnect the connectors and remove the inter-board cable connecting the mainboard to the daughterboard (also known as the sub-board).

⚠️️ 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.

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


How to disassemble Samsung Galaxy A7 (2018) SM-A750, Step 8/1 How to disassemble Samsung Galaxy A7 (2018) SM-A750, Step 8/2 How to disassemble Samsung Galaxy A7 (2018) SM-A750, Step 8/3

Step 8. Remove the daughterboard

Disconnect the coaxial cable connector.

After that we can remove the sub-board. It may be glued to the frame or attached with attachments like latches or hooks, so be careful.

ℹ️️ The sub-board contains a charging port (Micro-USB), microphone, headphone jack socket, spring contacts for the speaker, vibration motor, and an antenna unit.

⚠️️ It is not necessary to insert the tool underneath when removing the sub-board. Internal components could be damaged.


How to disassemble Samsung Galaxy A7 (2018) SM-A750, Step 9/1 How to disassemble Samsung Galaxy A7 (2018) SM-A750, Step 9/2 How to disassemble Samsung Galaxy A7 (2018) SM-A750, Step 9/3

Step 9. Disconnect the connector

Pry up the connectors of the display module cable, and two coaxial cables.

⚠️️ 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.


How to disassemble Samsung Galaxy A7 (2018) SM-A750, Step 10/1 How to disassemble Samsung Galaxy A7 (2018) SM-A750, Step 10/2

Step 10. Remove the front camera

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


How to disassemble Samsung Galaxy A7 (2018) SM-A750, Step 11/1 How to disassemble Samsung Galaxy A7 (2018) SM-A750, Step 11/2

Step 11. Unscrew one screw

Using a screwdriver Phillips 1.5 mm PH #000, unscrew one screw securing the motherboard.


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Step 12. Remove the motherboard

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.


How to disassemble Samsung Galaxy A7 (2018) SM-A750, Step 13/1 How to disassemble Samsung Galaxy A7 (2018) SM-A750, Step 13/2 How to disassemble Samsung Galaxy A7 (2018) SM-A750, Step 13/3

Step 13. In the display frame remained

ℹ️️ In the display frame remained: the earpiece speaker, loudspeaker, battery, vibration motor, small board, two coaxial cables.

Detailed disassembly instructions of Samsung Galaxy A7 (2018) SM-A750 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.


Disassembling\Repair has medium complexity and takes about 17 minutes in time. Our manual is suitable for all models Samsung Galaxy A7 (2018) SM-A750 released for markets in different countries.



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