Galaxy A70 - Replacing the display

1. Switch off your Galaxy A70 by pressing down the power button for a few seconds.

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.

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.

• 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.

• 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.

• 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.

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.

• 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.

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.

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.

• 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.

• 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.

1. Now take your new display and remove all protective films.

• 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.

• 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.

1. Return the vibration engine to its original position.
2. Then press it firmly.

1. Put the earpiece back to its last position and press it firmly.

• 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.

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 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.

• 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.

• Connector

1. Reconnect the battery to the main board by pressing the battery connector down.

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.

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.

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.