Galaxy A70 - Replacing the display

  • Galaxy A70
  • 24 Steps
  • Medium
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The display of your Samsung Galaxy A70 has jumped, the touchscreen does not work anymore, pixel errors are displayed?

We explain step by step how you can replace the defective display of your Samsung Galaxy A70 on your own. We will guide you through the process from opening the back cover to removing and reinstalling the individual components.

A special feature of the Galaxy A70 should already be mentioned at this point: Since the back cover is not made of glass but of more robust plastic, it can't be damaged that easily during the repair.

If questions arise during the repair, don't hesitate to contact our support team via the chat or comment function. We will gladly help you further. We would also appreciate your feedback and an evaluation of our manual!

And now good luck with the repair and have fun with your repaired Samsung Galaxy A70!

Required tools

  • Tool for prying out batteries

    Tool for prying out batteries

    You have to use a very stable tool to pry out the battery. At the same time, it has to be flat enough to insert below the battery.

    €2.00 at the iDoc store
  • Flat Picks

    Flat Picks

    You need a very flat tool such as a flat pick to pry out parts that are glued in place.

    €2.00 at the iDoc store
  • Heat gun

    Heat gun

    You can use a heat gun to heat parts that are glued on so they’re easier to remove. In most cases, you can also use a hairdryer.

    from €14.47 on Amazon
  • For storing screws

    For storing screws

    We recommend storing your screws so you don’t mix up the various screws and small parts.

    €10.00 at the iDoc store
  • iFlex opening tool

    iFlex opening tool

    Opening your smartphone can be a very delicate operation, especially if the glue is very persistent. The blade of the flexible but sturdy iFlex measures just 0.15 mm, so it fits in even the smallest gaps, such as between the screen and the frame. The practical iFlex is made of stainless steel and sits comfortably in the hand. This makes it the perfect assistant for every smartphone repair.

    €10.00 at the iDoc store
  • Tweezers

    Tweezers

    We recommend using tweezers to remove screws and various small parts from your device.

    €10.00 at the iDoc store
  • Plastic prying tool

    Plastic prying tool

    You need a flat plastic prying tool to disconnect the various plugs and connectors.

    €2.00 at the iDoc store
  • Universal Adhesive Tapes

    Universal Adhesive Tapes

    €3.00 at the iDoc store
  • Suction cup

    Suction cup

    A suction cup is perfect for lifting smooth surfaces such as displays or rear glass panels.

    €2.00 at the iDoc store
  • Phillips PH00 screwdriver

    Phillips PH00 screwdriver

    You need the right screwdriver for removing PH00 screws.

    €13.00 at the iDoc store

Required replacement part

Show all replacement parts for the Galaxy A70 

Replacement parts and tools for this repair

Our tools plus the right spare part help you fix your device easily.

Getting started with the repair of your Galaxy A70

If you get stuck or have questions, you can post a comment. We’d be happy to help.

24 steps
  1. Switch off your Galaxy A70

    Galaxy A70 - Switch off your Galaxy A70 01
    Galaxy A70 - Switch off your Galaxy A70 02
    1. Switch off your Galaxy A70 by pressing down the power button for a few seconds.
  2. Heating up the back cover

    Galaxy A70 - Heating up the back cover 01
    Galaxy A70 - Heating up the back cover 02
    Used tools

    The Galaxy A70 is opened via the plastic back cover, which is glued to the edge. You need to heat the glue with hot air before repairing to be able to open your device.

    Most of the glue is in the upper and lower backcover area.

    1. To heat the glue, you can use a heat gun or a normal hair dryer. Move the hot air evenly over the edge of your device.

    The rule of thumb is: Always heat your device only to the extent that you can still touch it without it becoming uncomfortably hot.

    Used tools
  3. Removing the back cover

    Galaxy A70 - Removing the back cover 01
    Galaxy A70 - Removing the back cover 02
    Galaxy A70 - Removing the back cover 03
    Galaxy A70 - Removing the back cover 04
    Galaxy A70 - Removing the back cover 05
    Used tools
    1. When the edge of your device is heated, place a suction cup in the lower part of the backcover and slowly pull it upwards to create a gap between the backcover and the center frame. At the same time you try to insert a stable, flat tool into the gap. We recommend the iFlex or the iPlastix.

    The iFlex is made of metal and therefore has a sharp edge. The iPlastix is made of flexible plastic and therefore has less sharp edges.
    To avoid scratches on your device, we recommend you start with the iFlex at this step and continue with the iPlastix as early as possible.

    Make sure that you never insert your tool too far into the device to avoid damaging components and flex cables!

    1. Once a gap has been created, guide your tool along the edge piece by piece to completely release the backcover. To facilitate loosening, it is advisable to heat the frame again and again in between. In addition, insert several flat picks along the gap to prevent the adhesive from rebonding at the points already loosened.
    2. Take off the back cover. If the adhesive strip is still as intact as in our example, you do not need to apply a new adhesive strip for subsequent gluing.


    Used tools
  4. Removing the middle frame

    • 14 × 4.0 mm Phillips
    1. To release the middle frame, first remove the SIM card holder, for example with the SIM tool or another pointed object.
    2. Loosen the screws that hold the middle frame on the display.
    3. Now try to create a gap between the display and the middle frame with a plectrum.
    4. Move the tool once around the edge of the display in order to be able to loosen the middle frame entirely.


  5. Disconnecting the battery

    Galaxy A70 - Disconnecting the battery 01
    Galaxy A70 - Disconnecting the battery 02
    Used tools
    • Connector

    Make sure that you always work on the connector from the side where there are no small components on the board. That way you avoid damage.

    1. Disconnect the battery connector to prevent a short circuit during the repair. To do this, carefully drive a plastic spudger under the battery connector and lift it off.


    Used tools
  6. Detaching the flex cabel

    Galaxy A70 - Detaching the flex cabel 01
    Galaxy A70 - Detaching the flex cabel 02
    Galaxy A70 - Detaching the flex cabel 03
    Galaxy A70 - Detaching the flex cabel 04
    • Connector
    1. To loosen the flex cable that connects the mainboard to the USB board, you need a plastic spudger as well.
    2. Use it to carefully slide under the two connectors of the flex cable and lift them off. Put the loosened flex cable aside.
  7. Removing the battery

    Galaxy A70 - Removing the battery 01
    Galaxy A70 - Removing the battery 02
    Galaxy A70 - Removing the battery 03
    Galaxy A70 - Removing the battery 04
    Used tools

    Never heat the battery directly, always heat it from the side of the display only! Otherwise it can be damaged.Avoid lifting it in the upper part of the battery as this is where the battery controler is located.
    When loosening the battery, avoid damaging its cover or bending it.

    To remove the wide sticky battery from your device, you will need a wide, stable and a flat, flexible plastic tool.
    We recommend you the battery spudger and the iPlastix.

    1. First heat the glued battery from the side of the display with a hot air dryer to make it easier to remove.
    2. Then place the battery spudger on the bottom edge of the battery and try to loosen it by gently levering it upwards.
    3. Proceed with the iPlastix as soon as the battery is slightly loosened. This allows you to slide more under the battery to loosen the glue.
    Used tools
  8. Removing the mainboard

    Galaxy A70 - Removing the mainboard 01
    Galaxy A70 - Removing the mainboard 02
    Galaxy A70 - Removing the mainboard 03
    Galaxy A70 - Removing the mainboard 04
    Galaxy A70 - Removing the mainboard 05
    Used tools
    • 1 × 2.9 mm Phillips
    • Connector
    1. First, remove the antenna cable with tweezers. For this purpose, carefully turn the golden antenna plug back and forth at the transition to the antenna cable.
    2. Then unscrew the single Phillips screw that holds the mainboard in place.
    3. Carefully lift the mainboard with a spudger and take it out of your device.
    Used tools
  9. Removing the earpiece

    Galaxy A70 - Removing the earpiece 01
    Galaxy A70 - Removing the earpiece 02
    Galaxy A70 - Removing the earpiece 03
    1. First remove the strongly ahered earpiece. To make it easier removable, you can heat it up with a hot-air gun or a regular hairdryer.
    2. Then gently lever it out of your device.
  10. Removing the vibration engine

    Galaxy A70 - Removing the vibration engine 01
    Galaxy A70 - Removing the vibration engine 02
    Galaxy A70 - Removing the vibration engine 03
    Galaxy A70 - Removing the vibration engine 04
    1. Also heat the glued vibration engine with hot air, so that it can be removed more easily afterwards.

    Avoid levering on the golden contacts, as these can easily be bent and damaged.

    1. Using tweezers, carefully loosen the vibration engine in its holder and take it out of the device.
  11. Removing the fingerprint sensor

    Galaxy A70 - Removing the fingerprint sensor 01
    Galaxy A70 - Removing the fingerprint sensor 02
    Galaxy A70 - Removing the fingerprint sensor 03
    • Connector
    • 2 × 2,9 mm Phillips
    1. Using a plastic spudger, carefully remove the fingerprint sensor connector from the USB board.
    2. Remove the two screws with which the sensor is attached to the USB board, then lift it out.

    Take care not to damage any small components on the USB board when levering it out.

  12. Removing the USB board

    Galaxy A70 - Removing the USB board 01
    Galaxy A70 - Removing the USB board 02
    Galaxy A70 - Removing the USB board 03
    Galaxy A70 - Removing the USB board 04
    • Connector
    1. Carefully lever off the display contact with a plastic spudger.
    2. Then detach the USB board and the antenna cable with the spudger as well.
  13. The right tools for your repair

    With the right tools, you will succeed in any repair. In our store you will find a large selection of professional quality tools.
    VIEW NOW
  14. Preparing the new display

    Galaxy A70 - Preparing the new display 01
    1. Now take your new display and remove all protective films.
  15. Inserting the USB board

    Galaxy A70 - Inserting the USB board 01
    Galaxy A70 - Inserting the USB board 02
    Galaxy A70 - Inserting the USB board 03
    Galaxy A70 - Inserting the USB board 04
    • Connector
    1. Put the USB board back into its original position on the new display.
    2. Put the antenna cable back into its place at the edge of the display.
    3. Attach the display connector.
  16. Inserting the fingerprint sensor

    Galaxy A70 - Inserting the fingerprint sensor 01
    Galaxy A70 - Inserting the fingerprint sensor 02
    Galaxy A70 - Inserting the fingerprint sensor 03
    • 2 × 2,9 mm Phillips
    • Connector
    1. Put the fingerprint sensor back in its original position and screw it to the USB board with the two Phillips screws.
    2. Then attach the connector of the fingerprint sensor.
  17. Inserting the vibration engine

    Galaxy A70 - Inserting the vibration engine 01
    Galaxy A70 - Inserting the vibration engine 02
    1. Return the vibration engine to its original position.
    2. Then press it firmly.
  18. Inserting the earpiece

    Galaxy A70 - Inserting the earpiece 01
    1. Put the earpiece back to its last position and press it firmly.
  19. Inserting the mainboard

    Galaxy A70 - Inserting the mainboard 01
    Galaxy A70 - Inserting the mainboard 02
    Galaxy A70 - Inserting the mainboard 03
    • 1 × 2,9 mm Phillips
    • Connector
    1. Put the mainboard back into your Galaxy A70.
    2. Attach the main board with the previously loosened screw.
    3. Connect the antenna cable with the main board again. To do so, press it carefully on the connector provided until you feel it click into place.
  20. Inserting the battery

    Galaxy A70 - Inserting the battery 01
    Galaxy A70 - Inserting the battery 02
    Used tools
    1. The new Galaxy A70 display does not come with new adhesive strips to attach the battery.
      Usually, the adhesive residues on the back of the battery or the inside of the middle frame are sufficient to fix the battery securely.
    Make sure that the battery has enough space in the device on all sides and does not get squeezed anywhere.

    Make sure the adhesive residues lie smoothly on the battery surface and do not form lumps. Clumped adhesive residues must always be removed to prevent the battery from resting unevenly.

    1. To be on the safe side, you can remove all adhesive residue and stick thin, double-sided adhesive tape or universal adhesive tapes to the back of the battery before you put it back in its original position.
    Used tools
  21. Connecting the flex cabel

    Galaxy A70 - Connecting the flex cabel 01
    Galaxy A70 - Connecting the flex cabel 02
    • Connector
    1. Press the flex cable onto its two connectors on the main board and USB board until you feel them engage.

    Pay attention to the labels on the flex cable! "Main" must be attached to the side of the main board.


  22. Connecting the battery

    Galaxy A70 - Connecting the battery 01
    Galaxy A70 - Connecting the battery 02
    Galaxy A70 - Connecting the battery 03
    • Connector
    1. Reconnect the battery to the main board by pressing the battery connector down.
  23. Inserting the middle frame

    Galaxy A70 - Inserting the middle frame 01
    Galaxy A70 - Inserting the middle frame 02
    Galaxy A70 - Inserting the middle frame 03
    1. Place the display on the middle frame and carefully press it firmly so that it snaps in from all sides.
    2. Then turn your Galaxy A70 to the screen to slide the SIM card holder back into the device.

    Make sure that you align the display correctly. Orientate yourself towards openings such as the camera and speakers.

    1. Now fix the middle frame to the display with the Phillips screws that you have loosened before.
  24. Testing your Galaxy A70

    Galaxy A70 - Testing your Galaxy A70 01
    Galaxy A70 - Testing your Galaxy A70 02
    Galaxy A70 - Testing your Galaxy A70 03
    1. Test your new display for full functionality before you completely close your Samsung Galaxy A70 again.
    2. Start your phone and open the call app.
      Enter *#0*# in the number field to open the Samsung test menu.
    3. For example, test if colours are displayed correctly and the touch is recognised everywhere on the display.
      You can also test all other functions, such as speakers, vibration motor, etc.
    4. If everything works as expected, you can lock the device.
  25. Attaching the back cover

    Galaxy A70 - Attaching the back cover 01
    Galaxy A70 - Attaching the back cover 02
    Verwendete Ersatzteile

    If the adhesive frame on your backcover is still intact, you do not need to remove it to attach a new adhesive frame. If the adhesive frame is no longer intact or clumped, remove it completely with a spudger and attach a new one.

    1. Attach the backcover and press it once along the edge so that the adhesive frame sticks everywhere.
    2. Heat the backcover edge again with hot air and then weigh it down with books so that the glue spreads well everywhere.
    Verwendete Ersatzteile
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